An alternative to sharding a MongoDB replica set that outgrew its memory
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Ranked by a public rubric, not by votes: what a comment adds counts, not who wrote it. How comments are ranked · Comment rules
Summary
Thermocline is an open-source proof of concept, described by its author Mario Zelaya, that puts a small fast MongoDB replica set in front of an existing cluster that has outgrown its memory, routing recent data to the fast tier by age so the application needs no changes.