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Some worth mentioning improvements for pessimistic transactions

November 11, 2011    Tags: transactions locking

Pessimistic transactions were added in 5.1 and are the "rebranding" of eager transactions from previous Infinispan releases. But besides the re-branding, the code also brought some worth mentioning performance optimisation: a single RPC happens for acquiring lock on a key...

Fewer deadlocks, higher throughput

November 11, 2011    Tags: transactions locking deadlock detection

Here’s the problem: first transaction (T1) writes to key a and b in this order. Second transaction (T2) writes to key b and a - again order is relevant. Now with some "right timing" T1 manages to acquire lock on a and T2 acquires lock on b. And then they wait one for th...

Single lock owner: an important step forward

November 09, 2011    Tags: radargun transactions locking deadlock detection

The single lock owner is a highly requested Infinispan improvement. The basic idea behind it is that, when writing to a key, locks are no longer acquired on all the nodes that own that key, but only on a single designated node (named "main owner"). How does it help me? Sh...

More locking improvements in Infinispan 5.1.0.BETA4

November 09, 2011    Tags: locking API

The latest beta in the Infinispan 5.1 "Brahma" series is out. So, what’s in Infinispan 5.1.0.BETA4? Here are the highlights: A hugely important lock acquisition improvement has been implemented that results in locks being acquired in only a single node in the cluste...

Infinispan 5.1.0.BETA3 is out with Atomic Map and Hot Rod improvements

October 27, 2011    Tags: atomic maps hotrod

I’m very proud to announce yet another beta release in the 5.1 'Brahma' series. This time is the turn of Infinispan 5.1.0.BETA3 which apart from containing many small fixes, it comes with two major improvements: Fine-grained Atomic Maps Atomic Maps are special const...

Infinispan 5.1.0.BETA2 is out and asymmetric clusters are here!

October 19, 2011    Tags: asymmetric clusters

The latest beta of the 5.1 'Brahma' series, 5.1.0.BETA2, is out now and thanks to Dan Berindei, it comes with support for asymmetric clusters which has been highly demanded. Before asymmetric clusters were supported, it was required that all Infinispan caches that client co...

An understudy for Devoxx 2011

October 18, 2011    Tags: devoxx

I won’t be able to make it to Devoxx this year, but worry not, the University talk and hands-on deep-dive on Infinispan will still go on. Pete and Mircea will be joined by Sanne Grinovero - maintainer of Infinispan’s querying capabilities, Lucene and Hibernate ha...

5.1.0.BETA1 "Brahma" is out with reworked transaction handling

October 04, 2011    Tags: transactions

It’s been a frantic couple of weeks at chez Infinispan with loads of hacking, presentations preparation, team meetings…​etc and we’re now proud to release Infinispan 5.1.0.BETA1 "Brahma". For this first beta release, the transaction layer has been re...

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