WiredTiger is a pluggable storage engine for MongoDB 3.0. This tag should only be used for questions surrounding the MongoDB system when used in combination with the WiredTiger storage engine.
MongoDB 3.0 introduces a new pluggable storage engine API and a new storage engine called WiredTiger.
Design goals for WiredTiger, include considerations for heavily threaded hardware, large on-chip caches, and SSD storage.
Latch-free and non-blocking algorithms have been implemented, as well as other techniques that improve scaling, overall throughput and latency.