hamsterdb 2.0.0 - Release Notes

hamsterdb Embedded Storage is a database engine written in ANSI C. It supports a B+Tree index structure, uses memory mapped I/O (if available), fast Cursors and variable length keys and can create In-Memory Databases.

The .NET and Java APIs are now integrated in the package. Both were updated.

This is the first stable release of the 2.0.0 branch. It fixed several minor bugs and improved performance. Also, the ham_txn_begin API was changed.

Compared to 1.x, a few functions were disabled *only if Transactions are enabled*:
- sorting duplicate keys (HAM_SORT_DUPLICATES)
- approximate matching
- direct access (HAM_DIRECT_ACCESS)
- partial read/write (HAM_PARTIAL)

These will be implemented in the following releases.

This release further stabilizes the 2.0.0 branch. It fixes the last known issues of the previous release and improves performance in many areas.

New Features

none

Bugfixes

none

Other Changes

A lot of code was refactored
Performance was improved
Changed interface ham_txn_begin, also for Wrapper APIs
The Java was updated and integrated
The .NET was updated and integrated
The WinCE package was moved to /contrib
When Recovery or Transactions are enabled then for most operations the physical log is no longer required; this reduces I/O and improves performance

Known Issues

none

For more information, read the README and the ChangeLog.