InfoQ Homepage Clustering & Caching Content on InfoQ
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Best Practices for Planet-Scale Software Updates
A new Microsoft research paper has examined data from billions of Windows update queries from 300 million computers using the Windows update service in order to learn about the traffic characteristics of software patch distribution and also examine alternative architectures (P2P and caching) to support planet-scale software updating.
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JBoss Cache 1.4 Released; Adds Buddy Replication
JBoss has released JBoss Cache 1.4 final, their distributed caching product which also includes PojoCache (formely TreeCacheAOP). The release adds Buddy Replication and Data Gravitation features and also optimizes their RPC marshalling algorithm resulting in 20-50% improved performance and throughpout.
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IBM ObjectGrid Distributed Transactional Cache Available
IBM has been quietly working on ObjectGrid, a distributed cache product as part of their Websphere Extended Deployment platform which also runs standalone with any server. Some key differentiators include transactional access, authorized cache access via JAAS and scalability to 100's. An limited eval version of ObjectGrid is available.
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Terracotta releases free 4 node Tomcat Session Clustering
JVM clustering vendor Terracotta has released for free use their Terracotta Sessions for Tomcat. The product is based on their distributed shared objects (DSO) product which uses a hub and spoke architecture and can synchronize changes across nodes at the field level (instead of serialization). The license allows projects with up to 4 nodes in their cluster to use it for free.