PECL/mysqlnd_ms 1.2 series
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1.2.1-beta
- Release date: 01/2012
- Motto/theme: see 1.2.0-alpha
Minor test changes.
1.2.0-alpha
- Release date: 11/2011
- Motto/theme: Global Transaction ID injection and quality-of-service concept
In version 1.2 the focus continues to be on supporting MySQL database clusters with asynchronous replication. The plugin tries to make using the cluster introducing a quality-of-service filter which applications can use to define what service quality they need from the cluster. Service levels provided are eventual consistency with optional maximum age/slave slag, session consistency and strong consistency.
Additionally the plugin can do client-side global transaction id injection to make manual master failover easier.
Feature changes
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Introduced quality-of-service (QoS) filter. Service levels provided by QoS filter:
- eventual consistency, optional option slave lag
- session consistency, optional option GTID
- strong consistency
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Added the mysqlnd_ms_set_qos() function to set the required connection quality at runtime. The new constants related to mysqlnd_ms_set_qos() are:
-
MYSQLND_MS_QOS_CONSISTENCY_STRONG -
MYSQLND_MS_QOS_CONSISTENCY_SESSION -
MYSQLND_MS_QOS_CONSISTENCY_EVENTUAL -
MYSQLND_MS_QOS_OPTION_GTID -
MYSQLND_MS_QOS_OPTION_AGE
-
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Added client-side global transaction id injection (GTID).
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New statistics related to GTID:
- gtid_autocommit_injections_success
- gtid_autocommit_injections_failure
- gtid_commit_injections_success
- gtid_commit_injections_failure
- gtid_implicit_commit_injections_success
- gtid_implicit_commit_injections_failure
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Added mysqlnd_ms_get_last_gtid() to fetch the last global transaction id.
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Enabled support for multi master without slaves.
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