/tags/placement/Recent content in Placement on Momo Engineering Journal/images/og-image.png/images/og-image.pngHugoen-usWed, 07 Oct 2026 01:35:45 -0600/posts/019-r1-failure-domain-placement/Wed, 26 Aug 2026 23:52:57 +0000/posts/019-r1-failure-domain-placement/Replicas must not ride in the same rack: CRUSH weights become rack/zone/DC-aware so a single domain failure can’t lose the data./posts/005-crush-placement/Tue, 30 Jun 2026 13:09:01 +0000/posts/005-crush-placement/Weighted rendezvous hashing picks replicas deterministically and peer-equally without a central allocator — later hardened for failure domains. Teaches: content-hash-based placement, weighted rendezvous hashing, deterministic stable sort, failure domain filtering.