TLDR Tech / Data
mondayDB 3 – Solving HTAP for a Trillion-Table System
mondayDB 3 is an HTAP system designed to handle over a trillion dynamic, constantly evolving tables with highly flexible schemas. They replaced their MySQL + JSON architecture with a CQRS-based Lambda architecture powered by DuckDB: immutable snapshots in object storage, an external WAL for real-time changes, and a soft-stateful serving layer that syncs + queries local DuckDB files on every read.
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