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[![Build Status](https://api.travis-ci.org/bitronix/btm.png?branch=master)](https://travis-ci.org/bitronix/btm) | ||
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The master version of the current source was built and published on maven central over [here](https://mvnrepository.com/artifact/com.github.marcus-nl.btm). | ||
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### Help! | ||
![help wanted](https://static.wixstatic.com/media/7dc740_3a94c9b3ccd14f939b7595843dc7c72d~mv2.png/v1/fill/w_240,h_240,al_c/7dc740_3a94c9b3ccd14f939b7595843dc7c72d~mv2.png) | ||
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BTM is looking for a new motivated team to look after it. If you would like to take over the project, please by all means contact us: [@bitronix](https://twitter.com/bitronix) and [@BrettWooldridge](https://twitter.com/BrettWooldridge). | ||
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### Home of BTM, the Bitronix JTA Transaction Manager ### | ||
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The Bitronix Transaction Manager (BTM) is a simple but complete implementation of the JTA 1.1 API. It is a fully | ||
working XA transaction manager that provides all services required by the JTA API while trying to keep the code | ||
as simple as possible for easier understanding of the XA semantics. | ||
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#### What's New #### | ||
The BTM 3.0 release has two primary goals: performance improvements, and code modernization. The codebase was moved from | ||
a Java 1.4 codebase to Java 5, taking advantage of generics for type-safety and `java.util.concurrent` classes for improved | ||
performance. Notable improvements are: | ||
* Greater use of low-contention lock collections throughout the code and the removal of most large-grained locks. | ||
* A new connection pool with a focus on zero-wait connection acquisition and concurrent expansion/contraction. For one large | ||
workload compared to BTM 2.1 total connection wait time went from 76 seconds to 372ms, and lock contentions went from 26269 | ||
to just 21. | ||
* High-performance proxies around `javax.sql` entities via bytecode generation with support for Javassist, and cglib, with | ||
fallback to `java.lang.reflect.proxy`. Javassist and cglib offer substantial performance increases and are strongly recommended. | ||
* High-performance transaction log journaling using a new design that allows concurrent appenders through a | ||
write-reservation model. The new journal is 3-14x faster than BTM 2.1. | ||
* Support for all levels of JDBC upto and including JDBC 4.1 | ||
* OSGi support | ||
* A change of license from LGPL v3 to Apache 2. | ||
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#### General Information #### | ||
* [Overview](https://github.com/bitronix/btm/wiki/Overview) | ||
* [FAQ](https://github.com/bitronix/btm/wiki/FAQ) | ||
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#### Configuration #### | ||
* [Transaction manager configuration](https://github.com/bitronix/btm/wiki/Transaction-manager-configuration) | ||
* [Resource loader configuration](https://github.com/bitronix/btm/wiki/Resource-loader-configuration) | ||
# Bitronix Transaction Manager (BTM) | ||
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Bitronix Transaction Manager (BTM) is a simple but complete implementation of the Java Transaction API (JTA) 1.1. This eXtended Architecture (XA) transaction manager provides all services required by the JTA while keeping the code as simple as possible for easier understanding of XA semantics. | ||
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The master version of the current source was built and published on the [Maven Central repository](https://mvnrepository.com/artifact/com.github.marcus-nl.btm). | ||
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## Credits | ||
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BTM was created and maintained by the Bitronix team and its community, especially [@bitronix](https://twitter.com/bitronix) and [@BrettWooldridge](https://twitter.com/BrettWooldridge). | ||
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Scalar, Inc., took over this great project so that we can continue to maintain and build on the project. We would like to thank [@bitronix](https://twitter.com/bitronix) and [@BrettWooldridge](https://twitter.com/BrettWooldridge) for their innovative work on BTM. | ||
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## General information | ||
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For general information, see the following: | ||
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* [Overview](https://github.com/scalar-labs/btm/wiki/Overview) | ||
* [FAQ](https://github.com/scalar-labs/btm/wiki/FAQ) | ||
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## Configuration | ||
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For details about configuring BTM, see the following: | ||
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* [Transaction manager configuration](https://github.com/scalar-labs/btm/wiki/Transaction-manager-configuration) | ||
* [Resource loader configuration](https://github.com/scalar-labs/btm/wiki/Resource-loader-configuration) |