Java Performance Tuning

Performance Checklist

• Use a relay server to examine data transfers.

• Reduce the number of messages transferred.

  • Cache data and objects to change distributed requests to local ones.

  • Batch messages to reduce the number of messages transferred.

  • Compress large transfers.

  • Partition the application so that methods execute where their data is held.

  • Multiplex communications to reduce connection overhead.

  • Stub out data links to reduce the amount of data required to be transferred.

• Design the various components so that they can execute asynchronously from each other.

  • Anticipate data requirements so that data is transferred earlier.

  • Split up data so that partial results can be displayed.

  • Avoid creating distributed garbage.

• Optimize database communications. Application partitioning is especially important with databases.

  • Use statically defined database queries.

  • Avoid database transactional modes if possible.

  • Use JDBC optimizations such as prepared statements, specific SQL requests, etc.