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mdbx: update Changelog.

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Change-Id: Iea4a2cf27c808ed9bbb4e3359050065ac73f3eda
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Leonid Yuriev 2021-02-07 02:53:27 +03:00
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@ -4,12 +4,26 @@ ChangeLog
## v0.9.4 (in development) scheduled at 2021-02-23
TODO:
- Engage new terminology (https://github.com/erthink/libmdbx/issues/137).
- Resolve few TODOs (https://github.com/erthink/libmdbx/issues/124, https://github.com/erthink/libmdbx/issues/127,
https://github.com/erthink/libmdbx/issues/115).
- Finalize C++ API (few typos and trivia bugs are still likely for now).
- Packages for [ROSA Linux](https://www.rosalinux.ru/), [ALT Linux](https://www.altlinux.org/), Fedora/RHEL, Debian/Ubuntu.
New features:
- Added `MDBX_DISABLE_PAGECHECKS` build option to disable some checks to reduce an overhead
and detection probability of database corruption to a values closer to the LMDB.
The `MDBX_DISABLE_PAGECHECKS=1` provides a performance boost of about 10% in CRUD scenarios,
and conjointly with the `MDBX_ENV_CHECKPID=0` and `MDBX_TXN_CHECKOWNER=0` options can yield
up to 30% more performance compared to LMDB.
Fixes:
- Fixed performance regression due non-optimal C11 atomics usage (https://github.com/erthink/libmdbx/issues/160).
## v0.9.3 at 2021-02-02
Acknowledgements: