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153 lines
5.3 KiB
Plaintext
153 lines
5.3 KiB
Plaintext
HikariCP Changes
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Changes between 1.3.0 and 1.3.1
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*) Java 6 compatibility.
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*) Added Sybase-specific disconnect error codes to SQLException snooping.
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*) Added HikariConfig.setCatalog() method to set DataSource catalog.
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*) Add DataSource.close() method that is synonymous with shutdown().
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*) More performance improvements (never ending).
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*) Moved benchmarks to https://github.com/brettwooldridge/HikariCP-benchmark
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Changes between 1.2.9 and 1.3.0
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*) Pool is now backed by a custom lock-less ConcurrentBag that
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provides superior performance to LinkedBlockingQueue and
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LinkedTransferQueue for usage patterns of connection pools.
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*) Fixed bugs reported against the 1.2.9 release.
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*) Added more detailed logging for broken connections and failures
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during new connection creation.
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Changes between 1.2.8 and 1.2.9
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*) Added a fail-fast option for pool initialization. If enabled, a
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RuntimeException will be thrown if there are errors during pool
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initialization.
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*) Made the registration of the HikariCP MBeans optional. They now
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default to not being registered. Registering them causes a minor
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performance hit due to additional pool data collection in
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HikariDataSource.getConnection().
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*) Added the SQLException message to the log entry when an exception
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occurs during physical connection acquisition.
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*) Implemented an orderly shutdown of the pool via the shutdown() method
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on HikariDataSource.
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*) Listened to "Adele - Live At The Royal Albert Hall" on endless loop.
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Changes between 1.2.7 and 1.2.8
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*) Fixed a critical bug introduced in 1.2.7 occurring when the number of
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concurrently open statements exceeds sixteen.
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Changes between 1.2.6 and 1.2.7
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*) Finally achieved performance parity between the generated delegates
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and the former method of instrumenting driver classes directly.
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*) Improved generated delegate code. Removed unnecessary casts, moved
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to a static proxy factory rather than a singleton (performance win).
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*) Improved performance of FastStatementList (primary source of speed-up
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to reach parity with former instrumentation code).
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*) Removed aliveness check on connection creation.
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*) Track connection isolation level and only reset if the state has
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become "dirty". Avoids unnecessary round trip to the DB during the
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aliveness check.
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*) Added interface IConnectionCustomizer and related HikariConfig
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property 'connectionCustomizerClassName' to allow users to specify
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a connection customization implementation.
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Changes between 1.2.5 and 1.2.6
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*) Fixed regression that caused IndexOutOfBounds when multiple unclosed
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Statements existed at the time of Connection.close().
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*) Fixed incorrect pom.xml dependency on Hibernate.
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Changes between 1.2.4 and 1.2.5
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*) Instrumentation mode (agent) removed due to narrowing gap between
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delegation mode and instrumentation (and to simplify the code base).
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*) Added setDataSource() to HikariConfig to allow a DataSource instance
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to be explicitly wrapped by the pool. Only available when creating
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HikariConfig programmatically or constructing HikariConfig from a
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java.util.Properties instance.
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*) Fixed Hibernate threading issue (certain usage patterns) introduced
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in 1.2.2.
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*) Fixed issue observed with PostgreSQL whereby the query that tests the
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connection for "aliveness" also starts a transaction (when auto-commit
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is false), thereby causing a later failure when we tried to set the
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transaction isolation level.
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*) Fixed issue where idleTimeout could not be set to 0, thereby disabling
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it. Incorrect value validation caused 0 to be rejected as a valid value.
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Changes between 1.2.3 and 1.2.4
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*) Fix another Hibernate-related issue whereby an NPE is encountered when
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a thread that was not the thread that obtained a Connection tries to
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interact with that Connection.
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Changes between 1.2.2 and 1.2.3
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*) Fix internal (but suppressed) exception during rollback of connections
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returned to the pool with auto-commit turned off.
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*) Fix a reflection issue that causes Hibernate failures due to the
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CallableStatement interface being incorrectly injected into statement
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proxies that are PreparedStatement or Statement instances.
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Changes between 1.2.1 and 1.2.2
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*) Perform a rollback() on connections returned to the pool with
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auto commit disabled.
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*) Add a constructor for HikariConfig that accepts a Properties
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object.
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*) Speed improvements for delegate mode.
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*) Fix a bug where connection timeouts could not be disabled.
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*) Permit setting the DataSource logWriter either on the HikariDataSource
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or via addDataSourceProperty() on the HikariConfig.
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*) Add transactionIsolation property to allow setting the default
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transaction isolation level for connections.
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Changes between 1.1.9 and 1.2.1
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*) Clear SQL warnings before returning a connection to the user.
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*) Added asynchronous connection backfill strategy that triggers
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when the pool becomes empty as a result of dispatching a
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connection.
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*) Changed default acquireIncrement to 1, set minimum timeout of
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100ms for acquiring a connection.
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Changes between 1.1.8 and 1.1.9
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*) Added connectionInitSql property to allow setting connection
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properties when a new connection is created.
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*) Added setDataSourceProperties() setter to HikariConfig to
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allow easier configuration though Spring.
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