2. Change log¶
2.1. 3.8.0 - “Crates” - 4/6/2020¶
From`Wikipedia <https://en.wikipedia.org/wiki/Main_Page>`_, the free encyclopedia:
Crates of Mallus was a Greek language grammarian and Stoic philosopher, leader of the literary school and head of the library of Pergamum. […] His chief work was a critical and exegetical commentary on Homer. He is also famous for constructing the earliest known globe of the Earth.
2.1.1. Changes in this version¶
[query] Support for INSERT TRUNCATE
[query] Significant performance improvement to GROUP BY queries for high-cardinality results
[daemon] Code is now optimized for Haswell architectures (use Core2 builds for older architectures)
[daemon] Properly honor cgroups memory restrictions (docker and kubernetes)
[daemon] Fixed backtrace functions log in Linux
[daemon] Upgraded to RocksDB 6.7.3
[client] Optimized client/server communications for better performance
2.2. 3.7.0 - “Apollodorus” - 3/2/2020¶
From`Wikipedia <https://en.wikipedia.org/wiki/Main_Page>`_, the free encyclopedia:
Apollodorus of Seleucia was a Stoic philosopher, and a pupil of Diogenes of Babylon. Apollodorus is famous for describing Cynicism as “the short path to virtue”, and he may have been the first Stoic after the time of Zeno to systematically attempt to reconcile Stoicism with Cynicism.
2.2.1. Changes in this version¶
Protocol version 34
[daemon] Blob on-disk and in-memory speed and size optimizations (up to X4 more memory efficient, X2 faster insertions)
[daemon] Improve eviction and overall memory usage
[daemon] Removed a bottleneck on concurrent read-only operations on the same table
[query] Support for timestamp comparisons in WHERE clauses
[query] New function to count adjacent differences in a column
[query] Allow to insert NULL strings in INSERT INTO statements
[query] Allow WHERE (t.)col1 = (t.)col2 with multiple tables (e.g. with a find statement)
[client] Auto-stabilization is now disabled by default
[client] The get last error API call is now per handle
2.3. 3.6.0 - “Antipater” - 2/3/2020¶
From`Wikipedia <https://en.wikipedia.org/wiki/Main_Page>`_, the free encyclopedia:
Antipater of Tarsus was a Stoic philosopher. He was the pupil and successor of Diogenes of Babylon as leader of the Stoic school, and was the teacher of Panaetius. He wrote works on the gods and on divination, and in ethics he took a higher moral ground than that of his teacher Diogenes.
2.3.1. Changes in this version¶
Protocol version 33
[query] New STRING type
[query] Properly handle NULL values in GROUP BY
[query] Support for ASOF against a generated time range
[query] Increase the flexibility of WHERE to allow for column to column comparisons
[query] Allow for function composition in the SELECT clause
[api] New call to get more context information about the last error
[api] Protocol version mismatch are no longer considered as “internal errors”
[api] Ensure that network and timeout errors are always returned as network errors and not “internal errors”
[shell] An aggressive optimization could make the shell display non-existing null values
[daemon] Blobs could be stored in the wrong column family resulting in unexpected “alias not found” errors
[daemon] Greatly improve eviction heuristics in the case of bulk insertion
[daemon] License expiration time is now available in the statistics
[daemon] Upgrade to RocksDB 6.5.3
[daemon] Fix signal handling to prevent deadlocks on SIGABRT or SIGSEGV
[daemon] Default timeout values have been increased
[daemon] Configuration is logged at startup
2.4. 3.5.0 - “Posidonius” - 12/23/2019¶
From Wikipedia, the free encyclopedia:
Posidonius “of Apameia” or “of Rhodes”, as a Greek Stoic philosopher, politician, astronomer, geographer, historian and teacher native to Apamea, Syria. He was acclaimed as the greatest polymath of his age. His vast body of work exists today only in fragments.
2.4.1. Changes in this version¶
Protocol version 32
Official Prometheus connector
[query] Support for LEFT, RIGHT, and FULL ASOF joins between time series
[query] Support for HAVING clause
[query] Faster GROUP BY/WHERE for single table queries
[query] In addition to finding by tag, the FIND() keywork support find by prefix.
[query] Query results are no longer grouped by table by default
[query] Fix find tags for grant, revoke, and ‘show’ related queries
[daemon] Newer and faster statistics collection engine
[daemon] Chord communications happen in separate, higher priority partitions (important change see cluster networking configuration).
[daemon] Persistent cache to leverage a local NVMe/SSD disk when data is stored in a remote storage
[daemon] Detect ungraceful shutdown
[daemon] Fixed erasure related bugs
[daemon] Improved background compaction
[daemon] Improved timeseries data compression
[daemon] Reduced background migration/replication memory usage
[daemon] Reworked eviction algorithms and configuration for better performance and lower latency updates
[daemon] Significantly reduced trim all memory usage
[daemon] Better error context for log messages
[daemon] Explicit error message for configuration file errors
[tools] dbtool can now do offline scanning and repair of timeseries buckets
[api/daemon] Support for task kill
[api] If a value and a null value share the same timestamp, ensure their ordering is always preserved
[api] New explicit error code for invalid network buffer size.
[api] Properly account the case sensitivity of regex queries
[api] Properly null terminate prefix results
[api] Full stream encryption is now automatically enabled or disabled on the client side
2.5. 3.4.3 - “Mnesarchus” - 10/15/2019¶
From Wikipedia, the free encyclopedia:
Mnesarchus of Athens, was a Stoic philosopher, who lived c. 160-c. 85 BC. After the death of Panaetius (109 BC), the Stoic school at Athens seems to have fragmented, and Mnesarchus was probably one of several leading Stoics teaching in this era.
2.5.1. Changes in this version¶
Protocol version 31
[daemon] Properly manage timeseries erasure during transaction
[daemon] Tune RocksDB to avoid re-write
[daemon] Improve transaction speed
[daemon] Avoid unnecessary migrations
2.6. 3.4.2 - “Mnesarchus” - 09/17/2019¶
From Wikipedia, the free encyclopedia:
Mnesarchus of Athens, was a Stoic philosopher, who lived c. 160-c. 85 BC. After the death of Panaetius (109 BC), the Stoic school at Athens seems to have fragmented, and Mnesarchus was probably one of several leading Stoics teaching in this era.
2.6.1. Changes in this version¶
Protocol version 31
[api] Updated .NET API to support int64 and timestamp columns
[api] Updated Node.js API to support nanosecond-precision timestamp
[daemon] Trimming, replicating and erasing no longer pollute the cache
[daemon] Changed default allocator to TBB
[daemon] Changed network buffer recycling strategy
[daemon] Improved log messages
2.7. 3.4.1 - “Mnesarchus” - 08/12/2019¶
From Wikipedia, the free encyclopedia:
Mnesarchus of Athens, was a Stoic philosopher, who lived c. 160-c. 85 BC. After the death of Panaetius (109 BC), the Stoic school at Athens seems to have fragmented, and Mnesarchus was probably one of several leading Stoics teaching in this era.
2.7.1. Changes in this version¶
Protocol version 31
[api] Updated NodeJS API to support authenticated connection and queries
[api] New function to load security credentials directly from a file
[query] Fixed a bug introduced in 3.4.0 with regards to the now() function
2.8. 3.4.0 - “Mnesarchus” - 07/23/2019¶
From Wikipedia, the free encyclopedia:
Mnesarchus of Athens, was a Stoic philosopher, who lived c. 160-c. 85 BC. After the death of Panaetius (109 BC), the Stoic school at Athens seems to have fragmented, and Mnesarchus was probably one of several leading Stoics teaching in this era.
2.8.1. Changes in this version¶
Protocol version 31
[daemon] New, queryiable, configurable, audit trail that stores every update to the database
[daemon] Increased efficiency of automatic entries trimming
[daemon] Automatically adjust memory usage when it exceeds the authorized license
[daemon] All durations in the configuration are now in milliseconds
[daemon] Fixed several insertion and erasure issues that could occur in heavy write workloads
[query] Support for DELETE
[query] DROP and ALTER can now work on multiple tables
[query] Fixed parsing issues where ORDER BY would not be allowed with WHERE clauses
[tools] New cluster-to-cluster replication tool that can be used for synchronization and migration
[api] Significant speed improvements to the batch inserter
[shell] Better, more contextual, error reporting
[shell] Various cosmetic improvements
[protocol] The client API can now more accurately inform the user if it connects to a server that is not a QuasarDB cluster
2.9. 3.3.0 - “Panaetius” - 05/13/2019¶
From Wikipedia, the free encyclopedia:
Panaetius of Rhodes was a Stoic philosopher. […] With Panaetius, Stoicism became much more eclectic. His most famous work was his On Duties, the principal source used by Cicero in his own work of the same name.
2.9.1. Changes in this version¶
Protocol version 30
[query] New aggregation to query the size of a timeseries on disk
[api] Can expire timeseries data to reach a certain given size
[shell] More explicit and user-friendly error messages
[daemon] Brand new statistics mechanics for live-monitoring and performance diagnostics
2.10. 3.2.0 - “Hierocles” - 03/29/2019¶
From Wikipedia, the free encyclopedia:
Hierocles was a Stoic philosopher. […] Hierocles is famous for a book called Elements of Ethics.
2.10.1. Changes in this version¶
Protocol version 30
[security] Fine-grained access control.
[security] Support for default user privileges.
[query] Support for ALTER TABLE.
[query] Support for SHOW GRANTS.
[query] Support for SHOW TABLES.
[query] GROUP BY performance improvements.
[query] Fixed multiple GROUP BY related bugs.
[query] Support for moving average, minimum, and maximum.
[query] Support for cumulative sum and distinct count.
[query] Greatly improved the performance of the lookup function.
[daemon] Optimize ORDER BY and LIMIT processing.
[daemon] Switched memory allocator to jemalloc.
[daemon] Fixed a clustering bug when the cluster was using stream encryption.
[API] Reworked Python API packaging.
[API] Python API pandas integration.
[API] Greatly improved batch insertion API performance.
[API] New low-level, high-performance interface for batch insertion.
[import] Greatly improved TSV/CSV importing tool performance and heuristics.
[export] New data exporting tool to export timeseries data to CSV files.
[REST] Various bugs and documentation fixes.
[REST] New configuration file format.
[shell] Display the shard size when displaying the time series information with SHOW.
[network] Reused sockets could ignore buffering parameters.
2.11. 3.1.0 - “Diodotus ” - 01/08/2019¶
From Wikipedia, the free encyclopedia:
Diodotus was a Stoic philosopher, and was a friend of Cicero. […] He instructed Cicero in Stoic philosophy and especially Logic.
2.11.1. Changes in this version¶
Protocol version 30
[query] Support for ALTER TABLE and schema migration
[query] LIMIT is now supported with OFFSET and ORDER BY
[query] Extended support for WHERE clause in GROUP BY
[query] Support for client-side lookup
[shell] Added option to manage network buffer size in the shell
[shell] Fixed display result order for ORDER BY
[daemon] Major performance update for insertion speed in synchronous and asynchronous mode
[daemon] Significantly reduced memory usage of the asynchronous timeseries insertion
[daemon] Clarified persistence options
[daemon] Added more customization options to the Helium persistence layer
2.12. 3.0.0 - “Posidonius” - 11/21/2018¶
From Wikipedia, the free encyclopedia:
Posidonius was a Greek Stoic philosopher, politician, astronomer, geographer, historian and teacher native to Apamea, Syria. He was acclaimed as the greatest polymath of his age. His vast body of work exists today only in fragments.
2.12.1. Changes in this version¶
Protocol version 30
[REST] New REST API bridge.
[GUI] New administration console.
[query] Support for arbitrary aggregations in addition to time aggregations with “GROUP BY”.
[query] New “TIME_JOIN” feature.
[query] Support for “CREATE”, “INSERT”, and “DROP”.
[query] Support for “ORDER BY”
[query] Support for fully qualified columns.
[query] Added support for “geohash64” function.
[shell] Fixed various results display bugs.
[daemon] Server side profiling.
[daemon] Improved indexes for better speed and disk usage.
[daemon] Internal changes in the protocol to deliver lower latencies for all queries.
[daemon] Compression optimizations.
[daemon] Purging the cache will now also purge the filesystem cache on Windows and Linux.
[daemon] Changed default parameters so that it can run on a default Linux installation.
[daemon] Anti DoS feature: limit the amount of data a single request may send.
[API] New batch insert API with optional asynchronous disk writing for very high disk throughputs.
[API] Built-in, configurable, automatic transactions retryer.
[API] Performance API to retrieve the server performance data.
[API] Optional, detailed, error message in the query result.
[packaging] Official ARM32 and ARM64 support.
[persistence] Upgraded to Helium 3.1.2
[persistence] Upgraded to RocksDB 5.14.2
2.13. 2.7.0 - “Eratosthenes” - 07/02/2018¶
From Wikipedia, the free encyclopedia:
Eratosthenes was a Greek mathematician, geographer, poet, astronomer, and music theorist. He was a man of learning, becoming the chief librarian at the Library of Alexandria. He invented the discipline of geography, including the terminology used today.
2.13.1. Changes in this version¶
Protocol version 20
[daemon] Compression optimizations.
[daemon] Better docker and NAT support. The daemon can advertise an address different from the one it listens to.
[daemon] Significant performance improvement to the first() aggregation function.
[daemon] Fixed an issue where timeseries were not automatically trimmed.
[query] Support for parsing IPv4 addresses as 64-bit integers.
[query] Support for aliases.
[query] Support for sub-ranges. You can now select months, days, and time from a larger range for precise ranges.
[shell] Fixed several bugs which could result in unaligned tables being displayed.
[api] Published Java API on Maven Central.
2.14. 2.6.0 - “Cleomedes” - 06/01/2018¶
From Wikipedia, the free encyclopedia:
Cleomedes was a Greek astronomer who is known chiefly for his book On the Circular Motions of the Celestial Bodies.
2.14.1. Changes in this version¶
Protocol version 20
[api] Official R API
[api] Official Grafana support
[api] High performance multi table bulk insert
[query] Gregorian calendar support
[query] A WHERE clause can now be applied on aggregations
[query] Support for regular expressions in blob comparisons
[query] Support for bitwise “and” operator in integer comparisons
[daemon] Greatly improved bulk insertion speed
[api] Removed obsolete filter in the API
[query] Fixed count related issues on blobs and timestamps columns
[query] SELECT count(*) now returns a valid result in all cases
[query] geometric mean is now properly accepted by SELECT
[query] Allows optional “;” at the end of queries
[daemon] Added more systemtap probes for finer tuning
2.15. 2.5.0 - “Theodosius” - 04/20/2018¶
From Wikipedia, the free encyclopedia:
Theodosius of Bithynia was a Greek astronomer and mathematician who wrote the Sphaerics, a book on the geometry of the sphere.
2.15.1. Changes in this version¶
Protocol version 20
[query] A WHERE clause can now have an arbitrary number of columns.
[query] The WHERE clause now supports comparisons for blobs.
[persistence] Optimized data storage and compression algorithms resulting in significant savings for timeseries with more than three (3) columns.
[daemon] Greatly reduced the probability of conflicts during time series insertions.
[api] When a cluster is unstable, the API will now wait a configurable amount of time for stabilization.
[api] hset are no longer exposed in the API.
[shell] Added a new command to display the current status of a cluster.
[web bridge] The query API is now available through REST.
[packaging] New Core2 build. The Core2 build enables you to run quasarDB on older generation of Intel-compatible processors. The default build requires a Westmere or better micro-architecture.
[packaging] We successfully built quasardb for the ARM64 architecture. Build available upon request.
[licensing] We’ve updated the licensing system. Previously attributed licenses will no longer work. Contact you quasarDB Solutions Architect for an updated license. This does not change the price or the validity of your current license.
2.16. 2.4.0 - “Aratus” - 03/11/2018¶
From Wikipedia, the free encyclopedia:
Aratus was a Greek didactic poet. His major extant work is his hexameter poem Phenomena, the first half of which is a verse setting of a lost work of the same name by Eudoxus of Cnidus. It describes the constellations and other celestial phenomena. The second half is called the Diosemeia , and is chiefly about weather lore.`
2.16.1. Changes in this version¶
Protocol version 20
[query] Support for arithmetic expressions in SELECT statements
[query] Support for multiple ranges in SELECT statements
[query] Initial support for WHERE clause - only single column queries are currently supported
[persistence] Greatly improved data compression (up to 5x)
[aggregations] Added specific SSE 4.2 optimizations for machines without AVX and AVX2
[aggregations] Significantly increased the speed of integer 64-bit aggregations (up to 6x)
[aggregations] Significantly increased the speed of sum_of_squares and product aggregations functions (up to 4x)
[python] Exposed query API
[shell] Fixed a bug where the columns would be displayed in the wrong order for a star SELECT
2.17. 2.3.0 - “Epictetus” - 02/15/2018¶
From Wikipedia, the free encyclopedia:
Epictetus was a Greek Stoic philosopher. He was born a slave at Hierapolis, Phrygia (present day Pamukkale, Turkey) and lived in Rome until his banishment, when he went to Nicopolis in northwestern Greece for the rest of his life. […] Epictetus taught that philosophy is a way of life and not just a theoretical discipline. To Epictetus, all external events are beyond our control; we should accept calmly and dispassionately whatever happens. However, individuals are responsible for their own actions, which they can examine and control through rigorous self-discipline.
2.17.1. Changes in this version¶
Protocol version 20
Queries can now leverage the result of tag based lookup
Fixed a bug where skewness computation could be invalid on very large time series
[api] The query language is now available through the API
[api] Some asynchronous operations did not properly retry on error, resulting in sporadic network errors popped back to the user
[admin] Adding an existing user will fail instead of overwritting the old one
[packaging] The libc++ API is now bundled on MacOS and FreeBSD for greater compatibility
[kernel] Accross the board performance improvements and memory usage reduction
[kernel] Upgraded to Boost 1.66
[persistence] Upgraded to RocksDB 5.9.2
2.18. 2.2.0 - “Chrysippus” - 12/21/2017¶
From Wikipedia, the free encyclopedia:
Chrysippus of Soli was a Greek Stoic philosopher. He was a native of Soli, Cilicia, but moved to Athens as a young man, where he became a pupil of Cleanthes in the Stoic school. When Cleanthes died, around 230 BC, Chrysippus became the third head of the school. A prolific writer, Chrysippus expanded the fundamental doctrines of Zeno of Citium, the founder of the school, which earned him the title of Second Founder of Stoicism.
2.18.1. Changes in this version¶
Protocol version 20
Brand new query language! Available as a preview in the shell. Try
select arithmetic_mean(volume) from stocks in range(now(), -1d) group by hournow! :-)Two new timeseries column types are supported: signed 64-bit integers and nanosecond timestamps
Increased memory limit of the community edition from 2 GiB to 4 GiB
Greatly improved timeseries insertion speed when data is interleaved
Fixed bug in kurtosis computation
Fixed a bug where erasing an empty range could result in an uncommitted transaction
[api] Support for row-level bulk get and insertion
[api] Transparently retry connection on asynchronous requests
[api] Make it possible to query the currently configured timeout
[shell] Persists command history
[shell] Support for syntax highlighting and better completion
[shell] Added command for suffix get
[persistence] Mounting a Helium volume will now be significantly faster on Windows
2.19. 2.1.0 - “Cleanthes” - 11/01/2017¶
From Wikipedia, the free encyclopedia:
Cleanthes, of Assos, was a Greek Stoic philosopher and successor to Zeno of Citium as the second head (scholarch) of the Stoic school in Athens. Originally a boxer, he came to Athens where he took up philosophy, listening to Zeno’s lectures. He supported himself by working as a water-carrier at night. […] He originated new ideas in Stoic physics, and developed Stoicism in accordance with the principles of materialism and pantheism.
2.19.1. Changes in this version¶
Protocol version 20
This build now targets the Westmere micro-architecture
Native support for distributed time series and server-side aggregation (with AVX support when available)
Cryptographically strong authentication (enabled by default)
Full network traffic encryption using AES GCM 256 (disabled by default)
Levyx Helium persistence layer for high performance storage
New querying language with support for distributed joins over tags
New API to count prefixes and suffixes
Empty entries are now allowed in deques
C API: Unified memory management functions for more convenience
Improved web bridge error messages logging
Improved performance for blob read operations
Reduced the impact on cluster performance when a node joins the ring
Improved eviction and trimming performance
The qdbsh output is colored on terminals that support it
New API calls: cluster_purge_cache and cluster_wait_for_stabilization
2.20. 2.0.0 - “Aristotle” - 01/17/2017¶
From Wikipedia, the free encyclopedia:
Aristotle was a Greek philosopher and scientist born in the city of Stagira, Chalkidice, on the northern periphery of Classical Greece. […] His writings cover many subjects – including physics, biology, zoology, metaphysics, logic, ethics, aesthetics, poetry, theater, music, rhetoric, linguistics, politics and government – and constitute the first comprehensive system of Western philosophy
Building on the solid foundation of quasardb 1.2, quasardb 2.0 is now fully transactional and support distributed secondary indexes while managing to push the performance limits even further.
2.20.1. Changes in this version¶
Protocol version 20
Distributed ACID transactions
Distributed secondary-indexes (tags)
Distributed double-ended queues (deques)
Native atomic signed 64-bit integers operations
Native support for Mac OS X
Many usability improvements in all tools
Switched from LevelDB to a customized RocksDB persistence layer
New APIs: Node.js and PHP
Greatly improved .NET and Java APIs
Performance level: ludicrous
And so much more!
2.20.2. Changes in the version¶
2.21. 1.2.1 - “Anaximander” - 05/05/2015¶
This release is our most scalable release ever and has been tested with up to 25,000 concurrent connections on a single node running on an entry-level dedicated server.
This release is fully compatible with 1.2.0 and the whole 1.1.x “Pythagoras” line.
2.21.1. Changes in this version¶
Protocol version: 14
Increased default TCP listen queue to 16,384 on all platforms
Stabilization is now less agressive in case of node failures, delivering an even better availability
Multi-connect is now done in a random order
Removed network usage graphs from the administration console
Fixed minor bugs in the configuration generation tool (https://www.quasardb.net/confgen/)
2.22. 1.2.0 - “Anaximander” - 02/09/2015¶
From Wikipedia, the free encyclopedia:
Anaximander was a pre-Socratic Greek philosopher who lived in Miletus,[3] a city of Ionia (in modern-day Turkey). […] He was an early proponent of science and tried to observe and explain different aspects of the universe, with a particular interest in its origins, claiming that nature is ruled by laws, just like human societies, and anything that disturbs the balance of nature does not last long.
This release unlocks even more performance with a brand new load-balancing algorithm. Without any configuration, reads will be done on the nearest, most available replica, resulting is better network usage and reduced latency.
We are also pleased to announce a brand new PHP API. Millions of websites accross the world can now benefit from quasardb unrivaled performance.
This release is fully compatible with the 1.1.x “Pythagoras” line.
2.22.1. Changes in this version¶
Protocol version: 14
New API: PHP
Reads are now automatically balanced, taking distance and load into account
When no licence is available, quasardb now runs in “free” mode for evaluation purposes
Fixed several glitches in the administration console and improved overall responsiveness
Fixed a condition where an invalid time stamp could be displayed in the log file
Web bridge: added an error message when the listening port isn’t available
2.23. 1.1.5 - “Pythagoras” - 12/15/2014¶
The release features significant improvements to the administration console and now persists the statistics.
This release is fully compatible with 1.1.0, 1.1.1, 1.1.2, 1.1.3 and 1.1.4.
2.23.1. Changes in this version¶
Protocol version: 14
Major improvements to the administration console
Statistics are now persisted within quasardb
Fixed a retro-compatibility issue where 1.1.3 clients requests could be misunderstood by 1.1.4+ servers
Fixed a reconciliation issue where a partitioned node rejoining a cluster could not correctly propagate an update
The shell now displays a meaningful error message when no remote daemon is available
All binaries and all platforms except FreeBSD now statically link against the libc++1 library for convenience
A warning is now emitted when a node reaches 90% of its quota
Java API : the multi-connect feature is now supported
FreeBSD installations now require FreeBSD 10 and Clang 3.5.
Windows clients now require Visual Studio 2013 Update 4.
Upgraded to Intel TBB
Upgraded to Boost 1.57.0
Upgraded to LevelDB 1.18
2.24. 1.1.4 - “Pythagoras” - 06/30/2014¶
This release features a brand new .NET API and various improvements to the administration interface.
This release is fully compatible with 1.1.0, 1.1.1, 1.1.2 and 1.1.3.
2.24.1. Changes in this version¶
Protocol version: 14
Reduced the dependencies of all binaries through static linking on all platforms
.NET API: Fully functionnal .NET 4.0 API
Administration console: added more information, fixed numerous glitches and greatly reduced memory usage
Daemon: greatly reduced inter-node traffic in a stable cluster
Shell: greatly improved online help
Linux: upgraded to gcc 4.8.2
Upgraded to Intel TBB 4.2 Update 4
Upgraded to LevelDB 1.17
2.25. 1.1.3 - “Pythagoras” - 04/29/2014¶
This maintenance release features a brand new administration interface, enabling users to monitor small to large clusters in just a couple of clicks!
This release is fully compatible with 1.1.0, 1.1.1 and 1.1.2.
2.25.1. Changes in this version¶
Protocol version: 14
Administration console: brand new administration console with many exciting features
Daemon and web bridge: support for file based configuration
Daemon: fixed a race condition where an error could be returned to successful long standing batch operations
Web bridge: added CPU, disk and memory usage information
Java API: it is now possible to specify an expiry for all write operations
Comparison tool: fixed progress display
Upgraded to LevelDB 1.16
2.26. 1.1.2 - “Pythagoras” - 02/03/2014¶
2.26.1. About¶
This maintenance release focuses on disk usage control. It is now possible to limit the persisted size. When the limit is reached, any operation which would result in a size increase will be aborted and an error will be returned.
This release is fully compatible with 1.1.0 and 1.1.1.
2.26.2. Changes in this version¶
Protocol version: 14
Daemon: added option to limit the persisted size
Daemon: fixed long log paths parsing
Web bridge: added network usage information
Comparison tool: new
put(only) commandComparison tool: added progress bar
Shell: fixed space related parsing bug
Upgraded to LevelDB 1.15
2.27. 1.1.1 - “Pythagoras” - 01/07/2014¶
2.27.1. About¶
This maintenance release comes with many new features and performance improvements. It is fully compatible with release 1.1.0.
2.27.2. Changes in this version¶
Protocol version: 14
Daemon: various optimizations to reduce latency
Comparison tool: support for multithreaded benchmarks
C/C++ API: Added client-side logging
C++ API: Batch and prefix operations can now be chained
Java API: Support for batch operations
Java API: Support for expiry
Python API: Support for batch operations
Upgraded to LevelDB 1.14
Upgraded to TBB 4.2
Upgraded to Boost 1.55.0
2.28. 1.1.0 - “Pythagoras” - 09/16/2013¶
2.28.1. About¶
From Wikipedia, the free encyclopedia:
Pythagoras of Samos was an Ionian Greek philosopher, mathematician, and founder of the religious movement called Pythagoreanism. […] Pythagoras made influential contributions to philosophy and religious teaching in the late 6th century BC. He is often revered as a great mathematician, mystic and scientist, but he is best known for the Pythagorean theorem which bears his name.
This release brings major new features. quasardb now support prefix based research, configurable expiration and batch operations. These features are brought to you without compromising on performance or reliability.
2.28.2. Changes in this version¶
Protocol version: 14
API: Support for prefix-based research
API: Support for configurable expiration
API: Support for batch operations (C/C++ only)
API: Deprecated streaming API
Upgraded to LevelDB 1.13
2.29. 1.0.1 SR1 - “Zeno” - 09/11/2013¶
2.29.1. About¶
This version is 100 % compatible with quasardb 1.0.1 “Zeno” and only includes important fixes.
2.29.2. Changes in this version¶
Protocol version: 13
Windows API: reliability fix The unability to securely generate an unique path could result in an ungraceful failure of qdb_open
Daemon: Clarified many error messages
Daemon, web bridge: Daemonization command switch on UNIXes
Daemon, web bridge: The HUP signal is now ignored on UNIXes
FreeBSD: upgraded to Clang 3.3
Upgraded to Boost 1.54.0
2.30. 1.0.1 - “Zeno” - 07/08/2013¶
2.30.1. About¶
This maintenance release includes an important security fix.
No new functionnality has been added.
2.30.2. Changes in this version¶
Protocol version: 13
Daemon: security fix Carefully crafted messages could cause the server to allocate an excessive amount of memory resulting in a denial of service
Console: Fixed glitches introduced in 1.0.0
API: The reported persisted size is now much more accurate
Daemon: Greatly improved performance for all status APIs
Daemon: Reworded some network error messages for clarity
Daemon: Minor performance improvement (less than 5%) for requests smaller than 1 KiB
Upgraded to Visual Studio 2012 Update 3
Upgraded to TBB 4.1 update 4
Upgraded to LevelDB 1.12
2.31. 1.0.0 - “Zeno” - 06/10/2013¶
2.31.1. About¶
From Wikipedia, the free encyclopedia:
Zeno of Citium was the founder of the Stoic school of philosophy, which he taught in Athens from about 300 BC. […] Stoicism laid great emphasis on goodness and peace of mind gained from living a life of Virtue in accordance with Nature.
After years of research and developement it is an overwhelming pleasure to annonce the availability of version 1.0.0. The last eighteen months have been dedicated to the everlasting quest of performance and stability. It is now time for the version number to reflect the level of quality and trustworthiness that quasardb delivers.
A big thank you to all our families, friends, partners and customers for their continued support that helped make quasardb a reality.
2.31.2. Changes in this version¶
Protocol version: 12
API: New atomical conditional remove (remove_if) operation
API: New atomical get and remove (get_remove) operation
API: Can now iterate on entries
Daemon: Replica do not stay hot in memory to reduce memory usage
Daemon: Timeout for inter-node communications is now properly accounted on all platforms
Daemon: Fixed a race condition where a session could be freed twice during shutdown
Upgraded to TBB 4.1 update 3
Upgraded to LevelDB 1.10
2.32. 0.7.4 - 03/18/2013¶
2.32.1. Changes in this version¶
API: Can now retrieve a remote node’s configuration in JSON format
API: Can now retrieve a remote node’s topology in JSON format
API: Can now remotely stop a node
C/C++ API: Added a qdb_e_uninitialized value to the error enumeration
Python API: Improved documentation and added examples
Web bridge: Richer global status information
Web bridge: More verbose logging
Daemon: In case of a critical error a detailled status will be dumped to a separate file on disk (in addition to previously existing log errors)
Daemon: Stabilization is one order of magnitude faster in case of failure
Daemon: Improved eviction speed in all cases
Daemon: The daemon now exits right away if the listening port is unavailable
Daemon: Better and more coherent network log messages
Daemon: A node that was started with incoherent parameters will now be forced out of the ring
Daemon: Fixed ignored remove_all requests issue
FreeBSD: upgraded to clang 3.2 and libc++ 1
Upgraded to Boost 1.53.0
2.33. 0.7.3 - 02/11/2013¶
2.33.1. Changes in this version¶
New C++ API!
C and Java API: Added qdb_error to translate an error code into a meaningful message
C/C++ API: Can connect to multiple remote hosts at a time for increased client-side resilience
Java API: Added support for
get_updateandcompare_and_swapoperationsConsole: Now display statistics for
get_updateandcompare_and_swapoperationsDaemon: Fixed invalid replication parameter logging
Daemon: Fixed invalid total size reporting
Daemon: Improved replication factor documentation
2.34. 0.7.2 - 01/14/2013¶
2.34.1. Changes in this version¶
Now officially named quasardb!
Daemon: Minimized thread switching to reduce latency
Various minor optimizations and improvements
Windows: Upgraded to Visual Studio 2012
Upgraded to Boost 1.52.0
Upgraded to TBB 4.1 SP1
Upgraded to LevelDB 1.9
2.35. 0.7.1 - 10/15/2012¶
2.35.1. Changes in this version¶
Daemon: Integrated licensing mechanism
Daemon: Fixed invalid statistics update
Upgraded to Boost 1.51.0
2.36. 0.7.0 - 09/04/2012¶
2.36.1. Changes in this version¶
Daemon: Automatic, integrated and distributed replication up to 4 copies
Daemon: Support for global configuration
Daemon: Fixed bug that could cause a connection reset between two nodes if they were using a half-duplex channel
Benchmarking tool: Added Redis support
Client API: Fixed bug that prevented the 32-bit Windows API to add entries larger than 4 GiB
Java API: Greatly improved performances, up to 100%!
Greatly improved the documentation
Upgraded to Boost 1.50.0
Known bug: the eviction, pagein and size counts reported in the administration console are invalid
2.37. 0.6.66 - 07/02/2012¶
2.37.1. Changes in this version¶
Client API: New streaming API (C only)
Client API: New compare and swap operation (C only)
Client API:
remove_allis no longer experimentalDaemon: Faster lookup on clusters with more than 20 nodes
Daemon: Faster stabilization on clusters with more than 5 nodes
Daemon: Automatically detects the best memory eviction threshold (can be overriden)
Daemon: changed the default port from 5909 to 2836 (can be overriden)
Java API: Fixed invalid method name (delete instead of remove)
Upgraded to LevelDB 1.5
2.38. 0.6.5 - 06/08/2012¶
2.38.1. Changes in this version¶
Client API: Major performance increase (up to 100%) for small entries (below 1 KiB)
Client API: Added more error codes
Client API: Added status query function
Client API: Added new, atomic,
get_and_updatefunctionClient API: Added experimental
remove_allfunctionDaemon: Greatly improved scalability for machines with more than 4 physical cores
Daemon: Removed obsolete options
Daemon: Improved Windows console logging performance
FreeBSD: Now requires FreeBSD 9.0 or later
FreeBSD: switched from gcc to Clang
Upgraded to LevelDB 1.4
Upgraded to Boost 1.49.0
Upgraded to TBB 4.0 SP4
2.39. 0.6.0 - 01/16/2012¶
2.39.1. Changes in this version¶
Python API: Brand new Python API!
Daemon: new “transient” option
Daemon: Improved memory management
Daemon: Improved performance for large entries
Daemon: Reduced latency
Upgraded LevelDB
2.40. 0.5.2 - 11/14/2011¶
2.40.1. Changes in this version¶
Windows: Digital signatures now include a timestamp.
Web bridge: Improved the internal data exchange format.
Daemon: When exiting under heavy load, the daemon could deadlock.
Daemon: Slight performance increase.
Client API: Improved performance on unreliable networks.
Upgraded LevelDB
Upgraded to TBB 4.0 SP1
2.41. 0.5.1 - 10/01/2011¶
2.41.1. Changes in this version¶
Java API: Major rework, better and easier than before!
Daemon: Added an icon in the Windows binary.
Daemon: Properly account the idle session parameter.
Daemon: Exit with an appropriate error message when the listening port is unavailable.
Client API: Made the connection process more resilient.
Upgraded LevelDB
2.42. 0.5.0 - 08/01/2011¶
2.42.1. Changes in this version¶
Peer-to-peer network distribution
Web bridge with JSON/JSONP interfaces
Java API
New persistence layer based on LevelDB
Lightweight HTML5 monitoring console
Reduced overall memory load
Improved performance by 10-20 %
Removed legacy code and API
The quasardb shell now handles binary input and output
Upgraded Linux and FreeBSD compilers to gcc 4.6.1
Upgraded to Boost 1.47.0
2.43. 0.4.2 - 05/26/2011¶
2.43.1. Changes in this version¶
Increased reliability
Major performance improvements for entries larger than 50 MiB
More verbose logging (if requested)
Reduced latency under extreme load
Reduced memory footprint
fix: The 0.4.1 Linux API could not be linked to due to a misconfiguration on our build machine
2.44. 0.4.1 - 05/07/2011¶
2.44.1. Changes in this version¶
Multiplatform Python API package with installer
Fixed FreeBSD invalid rpath
qdbsh can now process standard input and output
2.45. 0.4.0 - 04/22/2011¶
2.45.1. Changes in this version¶
Python API
Improved server network code
API and server are now available as two distinct packages
Fixed file logging date format
Installer for Windows version
Upgraded to Boost 1.46.1
Upgraded TBB to version 3.0 Update 6
Upgraded Windows compiler to Visual Studio 2010 SP1
Upgraded Linux and FreeBSD compilers to gcc 4.6.0
2.46. 0.3.2 - 02/26/2011¶
2.46.1. Changes in this version¶
Windows binaries are now digitally signed.
High-performance slab allocator is now used for logging.
Fixed a minor memory leak.
The Linux and FreeBSD binaries now have a rpath to automatically load libraries present in quasardb’s lib subdirectory.
Upgraded TBB to version 3.0 Update 5
2.47. 0.3.1 - 02/22/2011¶
2.47.1. Changes in this version¶
Asynchronous standalone TCP (IPv4 and IPv6) server
Fast monte carlo eviction
New high-performance slab memory allocator
Shell client
New API
May contain up to 1% of awesomeness