v1.2.0k

Version v1.2.0k is a version with only bug fixes and improvements.
No new features were added.

Bug fixes:

• the processes started by the Scheduler were staying in Z state
• setting a not existing variable could lead to a crash
• an unknown SET command on Admin interface would return an unexpected error for the client , #600
• CHANGE USER wasn't working as expected , #605
• Allows mysql-monitor_username to be a user in mysql_users table , #603
• removed debugging timers from not DEBUG version
• --safe-updates wasn't tracked , #555

Improvements:

• support for SET SESSION characters_set_server , #601
• prevent password credentials to show in error log , #599
• more syntax are supported in Admin allowing more compatibility with several clients , #204
• Reduce the calls to stats___mysql_query_rules and stats___mysql_commands_counters , #608
• for large resultset, reduced memory footprint and sent data to client as soon as possible , #606
• jemalloc compied with --enable-nunmap to reduce virtual memory footprint , #612
• support decay time purging in jemalloc
• added tool proxysql_galera_checker.sh to start supporting Galera

v1.2.0j

Version v1.2.0j probably will be the last version of 1.2.0 to implement new features. Ideally, only bug fixes will continue into this release before v1.2.1 .
Version v1.2.0j introduces the follow changes to v1.2.0i:

• added a new global variable mysql-init_connect with a list of statements that will be executed every time a new connection to backend is initialized . See #590
• added a new global variable mysql-max_allowed_packet . See #526
• SET NAMES now support quotes . See #588
• upgraded jemalloc from 4.1.0 to 4.2.1
• Access Denied errors are now more explicit . See #591
• added a new command line option (only command line) -M to disable the monitoring module
• mysql_users table now supports both plain text password and hashed password , in the same format of mysql.user.password
• other minor bug fixes

v1.2.0i

Bug fixes release.

Improved handling of network I/O and prevent several crashes caused by invalid file descriptors

v1.2.0h

Version v1.2.0h introduces the follow changes to v1.2.0f (changes to v1.2.0g were not documented):

• Logging
  • improved the logging of all queries , #561
  • logger now logs also information about client, server, hostgroup_id , digest and duration
• Enhancements on routing (query rules) :
  • mysql_query_rules is now extended and supports matching criteria on client address, proxy address, proxy port, and digest of the query , #537
  • added new global variables mysql-query_retries_on_failure (default to 1) that specifies how many times a query can be re-executed if failed
  • added new column retries in mysql_query_rules to allow to change the number of times a queries can be retried/re-executed
• Enhancements on SSL support
  • if a backend is configured to use SSL , Monitor module will use SSL too
  • use of SSL connections is now non-blocking after connect() : Note, connect() on SSL is still a blocking call and will be fixed in a future version
  • fixed a bug that caused a crash if a client was compiled against MySQL 5.7 library #583
  • prevent clients from connecting using SSL #540
• Scheduler #578 (further documentation required)
  • a new table scheduler is added to Admin module
  • ProxySQL can now calls external scripts at regular intervals
• general improvements and bug fixes
  • drastically reduced restart time #576
  • fixes file descriptors (not connections) leak #567
  • fixes a bug in counting current connections to backend #581
  • adds a counter of active transactions in fight #581
  • enforces variable mysql-monitor_connect_timeout . Without this Monitor could hang #584

v1.2.0g

Upgraded to version v1.2.0g

v1.2.0f

Version v1.2.0f introduces the follow changes to v1.2.0e :

• support for ssl-cipher , and new variable mysql-ssl_p2s_cipher , #565
• fixed regression bug introduced in #531 , see #566

v1.2.0e

Version v1.2.0e introduces the follow changes to v1.2.0d :

• reduces memory footprint for MySQL_Connection
• adds column use_ssl in table mysql_servers and 3 new configuration variables to enable SSL connections , see https://github.com/sysown/proxysql/blob/ssl/doc/SSL.md , #551 and #552
• adds column max_latency_ms in table mysql_servers : when not zero, servers with high latency are not considered for routing traffic (for example in a remote DC) . Servers with no max_latency_ms defined are computed against new global variable mysql-default_max_latency_ms
• adds experimental support for SERVER_MORE_RESULTS_EXISTS , #547
• Admin modules doesn't generate errors for unknown variable so that clients won't exist , #556 and #562
• adds new variable mysql-connection_max_age_ms to define the max lifetime of a connection , #563

v1.2.0d

Version v1.2.0d introduces significant changes to v1.2.0c in order to improves usability and stability, and should be considered experimental.
Changes:

• Reduced the memory footprint of some classes (MySQL_Thread, MySQL_Session, MySQL_Data_Stream)
• several minor optimizations
• removed libinjection , issue #424
• upgraded jemalloc from 3.6.0 to 4.1.0
• added support for more commands in __query_parser_command_type : START TRANSACTION , SET , SHOW , SHOW TABLE STATUS
• auto tuning of shun_recovery_time_sec , issues #530 and #531
• disable multiplexing for LOCK TABLE in addition to LOCK TABLES
• deprecated the use of mysql_close() , replace with close_mysql() , a non blocking wrapper
• enforced mysql-ping_timeout_server, issue #535
• enforced mysql-monitor_replication_lag_timeout, issue #541
• enforced mysql-monitor_ping_timeout, issue #542
• implemented mysql-monitor_ping_max_failures that defines the number of missed heartbeats before considering a backend to be dead, issue #544
• kills all connections to a backend if failed, issue #543
• balance connections usage based on weight and used connections, useful in case of server failure. Issue #545
• added support for CentOS 6.7
• added support for CentOS 7
• added support for Ubuntu 15.10
• fixed bug in initial handshake
• bug fixes in handling of SET AUTOCOMMIT
• re-executes queries in Admin if SQLite3 is busy
• allows online upgrade from v1.1.x

v1.2.0c

This is 1.1.2 stable with:

• in v1.2.0a
  • experimental mirroring support, see https://github.com/sysown/proxysql/blob/v1.2.0/doc/mirroring.md
• in v1.2.0b
  • re-added support for Ubuntu12
  • re-added support for debugging , issue #467
  • avoid races condition in writing/reading mysql_servers table
• v1.2.0c
  • re-implemented fast forward , issue #528

v1.2.0b

This is 1.1.2 stable with:

• experimental mirroring support, see https://github.com/sysown/proxysql/blob/v1.2.0/doc/mirroring.md
• re-added support for Ubuntu12
• re-added support for debugging , issue #467
• avoid races condition in writing/reading mysql_servers table