Roadmap

Current

• Optimize on 16/32-way machine
  • Compare arena spacing vs padding for better false sharing avoidance
  • Evaluate impact of fast-path
  • Publish v2 numbers
• Release v2

Version 2.0

A major revision that includes API incompatible changes.

• DONE: Replace LRU with W-TinyLfu eviction policy
• DONE: Inspect whether stats are enabled in the Policy
• DONE: Rename JCache CopyStrategy to Copier
• DONE: Removed Tracing package
• DONE: Remove NonReentrantLock (embed usage)
• DONE: Remove RemovalNotification (friendlier lambda syntax for listener)
• DONE: CacheLoader support for checked exceptions (rethrown as CompletionException)
• DONE: Avoid excessive scheduling of the maintenace task
• DONE: Fast path hot reads if compatible policy

Future

• Collections
  • MPSC linked array queue [slides]
  • Review ConcurrentLinkedStack for promotion out of Beta status
• Consider encoding the linked lists as arrays
  • 64-bit reference becomes 32-bit int (only if compressed OOPS is not enabled)
  • Better caching effects due to contiguous data
  • Cons: Limits the size (2B entries), cost is minimal due to maintenance done using ForkJoinPool