It’s been a busy summer here at VoltDB! Since spring the VoltDB Engineering team has released VoltDB four times (we’re operating on 3 week sprints) and delivered numerous product and performance enhancements.

Some of the major features we’ve recently released include:

• Pause-less rejoin of failed nodes. Failed nodes can now be rejoined to the k-safe cluster without significant impact to the operational throughput of the cluster. This feature is available in the Enterprise edition of VoltDB.

• Significant performance improvements around ad hoc SQL, which is SQL executed outside of stored procedures, via the @AdHoc system procedure invocation or through

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One of the best parts about working for a growing start-up is the chance to leave keyboard and office behind and escape to meet users. I spent last week in San Jose at NoSQLNow – a conference designed to bring together users and vendors of “Not Only SQL” products.

VoltDB is, quite proudly, a SQL system and some passers-by raise an eyebrow as we explain this. But our modern OLTP database shares some of the
same design vocabulary as many NoSQL systems: we shard data; we run on commodity and cloud hardware; we scale horizontally; we design for update and … Read more

I’m very happy to announce the release of VoltDB 2.5.  Consistent with prior releases, 2.5 includes one major new feature, Database Replication, combined with other significant work in and around the VoltDB core engine.  I’d summarize our 2.5 engineering investments as follows:

• Database Replication.  As I’d previously described here, Database Replication is the headline feature of 2.5 (until recently, we referred to the feature as WAN replication).  It allows VoltDB databases to be automatically replicated within and across data centers.  Available in the VoltDB Enterprise Edition, Database Replication ensures that every database transaction applied to a VoltDB database is

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