Percona Live: Open Source Database Performance Conference - Amsterdam 2016 Logo

October 3-5, 2016

Amsterdam, Netherlands

WiredTiger B-Tree vs WiredTiger In-Memory

WiredTiger B-Tree vs WiredTiger In-Memory

 5 October 5:25 PM - 6:15 PM @ Matterhorn 3
Experience level: 
25 minutes conference


In the WiredTiger engine many people know about its support for Btree (default) and the ability to enable LSM as well, but what few talk about is the In-Memory version of this engine. In this session, we will discuss what features do you get vs. lose when you move to in-memory. We will also discuss some use cases where it makes sense to use the in-memory options. This is meant to be a feature overview rather than an internals so it will help everyone understand more about this version of WiredTiger.


Sveta Smirnova's picture

Sveta Smirnova

Principal Technical Services Engineer, Percona


Sveta Smirnova works as MySQL Support engineer since year 2006, she is also author of book "MySQL Troubleshooting" and author of JSON UDF functions for MySQL. In years 2006 - 2015 she worked in in Bugs Analysis MySQL Support Group in MySQL AB, then Sun, then Oracle. In March 2015 Sveta joined Support Team in Percona. In years 2012-2015 she worked on bugs priority in Oracle, in year 2016 she restarted this role at Percona. She was also Support representative in MySQL Backup Development Team. She works on tricky support issues and MySQL software bugs on a daily basis. Before starting at MySQL in 2006, she worked as web developer on several closed CRM systems. In years 2012-2015 she worked on MySQL Labs project "JSON UDFs for MySQL". She is active participant in the open source community. Her main interests in recent years is solving DBA problems, finding ways to semi-automate this process and effective backup techniques. Sveta is author of the book "MySQL Troubleshooting" (

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