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Mongo hasn't used the MMAP storage engine for a long time. In fact it looks like it has even been removed now: https://docs.mongodb.com/manual/core/storage-eng
by bogomipz 5y ago
Mongo hasn't used the MMAP storage engine for a long time. In fact it looks like it has even been removed now:
https://docs.mongodb.com/manual/core/storage-engines/ https://docs.mongodb.com/manual/core/storage-engines/
Wired Tiger, the default storage engine is LSM Trees with BTrees for indexes.
- matchy 5y agoNot LSM, all BTrees, but the rest is correct.
- bogomipz 5y agoNot sure of the current state of Mongo but WT certainly has LSM Trees: http://www.hpts.ws/papers/2013/WiredTiger-HPTS.pdf http://www.hpts.ws/papers/2013/WiredTiger-HPTS.pdf http://source.wiredtiger.com/3.2.1/lsm.html http://source.wiredtiger.com/3.2.1/lsm.html