Blog Posts

• mtxdb: append-only packfiles for Matrix DAG storage

  2026-09-05
  MatrixStoragePerformance

  Run Synapse on spinning HDDs. Append-oriented packfile storage with a persisted index, inspired by MDBX, BadgerDB, and WiscKey.

  
  

• [DRAFT] Bloom, Cuckoo, and Quotient filters: break-even formulas

  2026-09-02
  AlgorithmsPerformanceData Structures

  Modeling the cross-over points between three probabilistic filters under fixed network latency.

  
  

• Faster Matrix state groups via an HAMT data structure

  2026-08-13
  MatrixProposalsAlgorithms

  Replacing delta-chain state groups with a content-addressed CHAMP trie keyed to MSC4500's LtHash16 accumulator — and what it looked like to rip the old design out of a real homeserver.

  
  

• MSC4521: Set Reconciliation

  2026-07-30
  MatrixProposalsApplications

  Synchronizing differences or proving set equality over the wire.