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What you get by replicating Lucene indexes on the Infinispan Data Grid (Berlin Buzzwords 2012)
- 1. 4 June 2012 Sanne Grinovero, Red Hat What you get by replicating Lucene indexes on the Infinispan Data Grid
- 2. Who is that guy? • Sanne Grinovero • From this planet • Team Hibernate • Hibernate Search • Hibernate OGM • Team Infinispan • Infinispan Core • Infinispan Query • Apache Lucene, Netty, HotSpot, ANTLR, JGroups, Byteman, The Jokre
- 3. What are we talking about? • Apache Lucene • Infinispan • Integrations with Lucene ● Infinispan Lucene Directory
- 5. • An in-memory datagrid • Memory of multiple nodes • Cluster modes • CacheLoaders • Integrations with Lucene • Lucene Directory
- 6. Infinispan API? • Map-like key/value store • JSR 107 javax.cache.Cache interface • JSR 347 ?? • Asynchronous API
- 7. In practice: cache.put( “user-34”, userInstance ); cache.get( “user-34” ); cache.remove( “user-34” ); cache.putIfAbsent( “user-38”, other );
- 9. Connected via JGroups A Toolkit for Reliable Multicast Communication http://jgroups.org
- 10. Or remote clients via: • Memcached • REST • Hot Rod (Ruby, Python, C, C#, ...) • Netty
- 12. Transactions!
- 13. JBoss AS7 core component • Cluster nodes autodiscovery • Session replication / failover • Hibernate second level cache • mod_cluster integration
- 14. In-memory volatile? Cache Stores: durability, warm caches, more capacity... • Cassandra • HBase • JDBC • Clouds (S3, ...) • Plain Old Files • Many more + custom
- 15. Back on Lucene: Single Writer lock
- 16. Queue-based clustering (filesystem index)
- 19. Index stored in Infinispan
- 20. Example architecture : JIRA / Scarlet
- 21. Hints • Some tuning options might have different effects than what you're used • Network is orders of magnitude faster than disk (YMMV) • But data locality helps • Balance resources • Get mergers to avoid segment chunking, or readlocks will engage
- 22. “benchmarks”, stats and more lies Write ops/sec Queries/sec RAMDirectory RAMDirectory Infinispan 0 Infinispan 0 Infinispan D4 Infinispan D4 queries per second Infinispan D40 Infinispan D40 FSDirectory FSDirectory Infinispan Local Infinispan Local 0 50 100 150 200 250 300 350 400 0 5000 10000 15000 20000 25000
- 23. It's not about the figures Write ops/sec Queries/sec RAMDirectory RAMDirectory Infinispan 0 Infinispan 0 Infinispan D4 Infinispan D4 queries per second Infinispan D40 Infinispan D40 FSDirectory FSDirectory Infinispan Local Infinispan Local 0 50 100 150 200 250 300 350 400 0 5000 10000 15000 20000 25000
- 24. What's next? • Infinispan (core) 5.2 and 6 • Lucene 4.x • Dynamic chunk sizes • Ad-hoc “Lucene native” CacheStore • NIO byte buffers?
- 25. Conclusions • Quick index replication • Transactions • Not a replacements for shards • Cloud-friendly • Delegates to any storage
- 26. Q&A http://infinispan.org @Infinispan http://in.relation.to @Hibernate http://jboss.org @SanneGrinovero