Version History

2.0 (2014-01-20)

tiedot has been rewritten to bring to you a cleaner code base!

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.

Known issues: None

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.

Known issue:

• Under a rare and specific data corruption situation, document update may panic.

alpha (2013-06-28)

Initial release.

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.