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:

1. 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.

2. Significant performance improvements around ad hoc SQL, which is SQL executed outside of stored procedures, via the @AdHoc system procedure invocation or through JDBC.
Some of our internal workloads saw three orders of magnitude improvement in ad hoc throughput.

3. SQL LIKE support.  
Provides the ability to search for a specified pattern in a column.

4. CSV Loader.  
The ability to load data into VoltDB from a text file containing comma-separated tabular values.

5. New PHP Client.
A new lightweight C-extension-based PHP client with a streamlined interface.