WAL-G 2.0 released

Release notes:

This release contains a huge amount of new features, bug fixes, and performance improvements. It is worth noting that v2.0 Postgres delta backups are not backward-compatible with the pre-2.0 versions. It means that the v2.0 delta backup can't be restored with the v1.1 or earlier versions. Also, this release introduces the initial support for Greenplum physical backups.

WAL-G for MySQL now supports the parallel backup-push/backup-fetch and has an optimized binlog upload mechanism. WAL-G for SQLServer now supports the backup encryption and compression as well as the external storage backup import/export.

WAL-G v2.0 is available for download on [our GitHub releases page](https://github.com/wal-g/wal-g/releases/tag/v2.0.0 "our GitHub releases page").

Common:

- Update lz4, brotli #1165, #1179
- Multiple libsodium fixes #1087, #1227
- Bash/zsh shell completions #1250, #1252
- Add a 'flags' subcommand #1033
- Disable CPU Limits in turbo mode #1121
- Metrics forwarding via statsd protocol #1240

SQLServer:

- Add SQLServerDBConcurrency setting to limit concurrent database operations #1067
- Add LATEST keyword handling #1110
- Add norecovery option for backup log command #1115
- Add SQLServer compression / encryption #1161
- Backup import and export to the external storage #1184

Postgres:

- Add CopyComposer for full backups optimization using remote copy API #1012
- Add streamed JSON sentinel serialization to decrease memory usage #1103
- Extract heavy files and tarfilesets from the backup sentinel #1114
- Introduce WALG_TAR_DISABLE_FSYNC to skip fsync during backup-fetch #1144
- Add reduced memory usage backup mode #1101
- Improvements and fixes for remote backup #1175
- Add pgBackRest backups restore support (beta) #1139, #1202
- Add 'wal-restore' command #977
- Add 'delete garbage' command #1217, #1218
- Return custom error code when WAL file does not exist #1195
- Add WALG_ALIVE_CHECK_INTERVAL to fail backup on Postgres process failure #1260
- Reformat LSN output #1259

MySQL:

- Add wal-g binlog-analyze #1085
- Check binlog GTIDs before pushing binlogs to S3 #1190
- Add --check-gtids to wal-g binlog-push #1085
- Add --until-binlog-last-modified-time option to wal-g-mysql binlog-replay #1154
- Improve MySQL restore performance #1131
- Allow backups on cascade replicas #1168
- Fix mysql backup of a lagging replica #1223
- Make mysql bilong-push status observable to 3rd party tools #1229

Greenplum:

- Initial physical backups support for GPDB 6.19.2+. API might change in the future versions.

Storages:

- Add get/put/rm/cat to storage tools #1069, #1164
- S3: Add download by range #1083
- S3: Add connection reset retries #1137
- S3: Add WALG_S3_MAX_RETRIES setting #1148
- S3: Fix S3_LOG_LEVEL setting #1158
- S3: AWS authentication fixes #1209
- S3: Yandex Cloud session token auth support #1213
- SSH: Ensure trailing delimiter in the storage prefix #1130
- Azure: Switch to the recommended azblob SDK #1135, #1171
- Azure: Fix ListFolder never returning error #1208
- Swift: Ignore files that were not found during ListFolder #1129

Best regards, WAL-G team.