Version History

3.3 (2016-07-01)

Bug fix:

• Fix missing int-range query result.
• Catch up with the latest development on JWT library.
• Rigorously check the parameter value of page numbers in GetPage API.
• Tweak performance advises.

3.2 (2015-02-12)

Bug fix:

• tiedot performs poorly on certain OS/FS combinations, this is due to the sparse file unintentionally created by Truncate operation, which is now fixed.

New experimental feature:

• Javascript Web Token can be optionally enabled to hand out token and authorize API calls.

Be aware that:

• This release gets rid of the web control panel due to numerous packaging/functional issues. Please let me know if you are interested in renovating the web control panel application!

3.1.3 (2014-12-01)

Sorry - I messed up a file in 3.1.2. This release fixes it.

3.1.2 (2014-12-01)

Improved RPM spec and systemd unit file to properly build on Open Build Service.

3.1.1 (2014-10-18)

Error handling is easier in embedded usage, see example.go for more details.

Fix a bug which causes query processor to return incorrect intersection/complement result.

3.1 (2014-09-01)

New stable features:

• A beautiful web control panel application runs along with ordinary HTTP APIs.
• Easily scan through large collections using new HTTP and embedded APIs.
• To package tiedot into RPM package, there is now a RPM spec pre-cooked for you.
• To run tiedot as a daemon, simply use the systemd user unit file.

Improvements:

• Significantly improved startup performance, thanks to Smart File Scan.
• Other improvements in error handling, locking, logging, and embedded usage examples.

Bug fix:

• Fix a bug that may cause inaccurate lookup query result to be returned.
• Fix a bug that may cause severely degraded performance in certain usages.

3.0 (2014-05-31)

Bug fix:

• Fix numerous bugs that may cause inconsistent index state in version 2.x

Improvements:

• Move document ID out of document data itself, improving performance.
• Tweaked hash table initial parameters.

Be aware that:

• Version 3.0 is not compatible with older databases, unfortunately a migration tool is not available at the moment.

2.1 (2014-05-31)

New experimental features:

• JSON parameterized queries
• A Python client for HTTP APIs

2.0 (2014-01-20)

tiedot 2.0 brings to you new file structures, APIs and a much cleaner codebase. The essential new feature in 2.0 is that all collections are partitioned, hoping to show better scalability; but the mechanism is still being tweaked.

Unfortunately, it is not compatible with older 1.x databases.

1.2 (2013-12-31)

Bug fix:

• Better embedded usage examples.
• Code comments rewritten to be more readable.

Improvements:

• Benchmark sample size is now configurable via CLI parameters.
• Structures inside array may now be indexed as well.
• New HTTP service endpoint to dump database while staying online.
• New HTTP service endpoint to flush all data buffers.
• Verbose log messages can be turned on/off.

Be aware that:

• Original V1 and V2 HTTP APIs have been removed, together with their documents.
• Old query processor (used by V1 and V2 APIs) has been removed.

1.1 (2013-11-07)

Bug fix:

• Panic due to out of memory on several 32-bit machines.
• Fix several incorrect HTTP API content type.
• Fix wrong new bucket position in opened hash tables.

Improvements:

• Remove per-collection padding buffer and replace it by a shared string buffer, to reduce memory consumption.
• Creation of data file no longer creates a giant empty buffer beforehand, therefore reducing memory consumption.
• Documents may now have optional persistent IDs (called UID) which will never change during its life time.
• API version 3 (New and backward compatible) supports document operations based on UIDs.
• Lock granularity is further tweaked.
• When a document cannot be indexed due to having incompatible data structure, a warning message is logged.
• Query now supports regex collection scan and reversed integer range lookup.

1.0 (2013-09-21)

Another maintenance release to address all outstanding issues, with feature improvements and new APIs.

Bug fix:

• Scalability problem on a model of laptop has been resolved.
• Collection update will no longer panic under a rare data corruption situation.

Improvements:

• Data file IO now uses more granular locks (RWlock-per-bucket and RWlock-per-document) instead of giant RW file lock.
• API version 2 (New and backward compatible)
• New HTTP endpoints to report server runtime performance.
• New query syntax - easier and more efficient, together with a new query processor.
• A specific type of range query (integer lookup in a range) is now supported.

beta (2013-07-12)

A maintenance release to address outstanding issues discovered in alpha.

Bug fixes:

• Data durability is greatly enhanced by periodically (every minute) synchronizing file buffers with storage device.
• Support durable write operations which flush all buffers immediately after collection operation.
• Fix wrong content type returned by several HTTP API endpoints.

Improvements:

• tiedot can now run on Windows platform.
• tiedot now has a web control panel for managing collections/indexes/documents and run queries.

alpha (2013-06-28)

Initial release with several known issues:

• Under a rare and specific data corruption situation, document update may panic.
• Several HTTP API endpoints return incorrect content type.
• File buffers in memory are not periodically synchronized with underlying storage device.