EclipseLink/Performance

EclipseLink is dedicated to being the best performing, and most scalable JPA implementation.

Features

EclipseLink's performance features include:

• Object cache
  • Cache invalidation (time to live, and time of day)
  • Configurable cache types per Entity, (Weak, Soft, SoftCache, HardCache, Full)
  • Configurable cache size per Entity
  • Clustered cache coordination
  • Database change event invalidation (Oracle DCN)
  • Cache indexes
• Querying
  • Read-only queries
  • Join fetching (query, nested, mapping)
  • Batch fetching (IN, JOIN, EXISTS)
  • Fetch groups (query, default, dynamic)
  • Fetch size
  • Pagination (firstResult, maxResult, ROWNUM filtering)
  • Cursors (stream and scrollable)
  • Cache usage (in-memory, primary key)
  • Query cache (invalidation, size configuration)
• Mapping
  • Lazy loading
  • Read-only objects
  • Weaving enhancements
• Transactions
  • Attribute level change tracking
  • Field level updates
• Database
  • Connection pooling
  • Parametrized SQL
  • Statement caching
  • Batch writing (JDBC, parametrized, native)
  • Indexes
• Tools
  • Performance Profiler
  • Performance Monitor

Benchmarks

• SPECjAppServer®

Links

• "Enhancing Performance" chapter in the EclipseLink Solutions Guide
• Performance Development
• Java Persistence Performance (Blog)
• Batch fetching - optimizing object graph loading
• How to improve JPA performance by 1,825%
• Data Partitioning - Scaling the Database
• EclipseLink 15x faster than other JPA providers
• Got Cache?
• Performance characteristics for 1-512 parallel threads on a single 8-core i7-920 node as part of a distributed JPA application