Datum

Appearance

Reference ​

Quick-access reference for Datum's operators, migration guide, configuration surface, and datum-net environment variables.

  • Operators — complete operator index with Akka↔Datum name map and status (✅ shipped · ⏭️ deferred · ❌ out of scope), grouped by category.
  • Migrating from Akka — name map, behavioral differences (Result not exceptions, typed/static vs dynamic graph validation, Tokio-first async), StreamRefs, graph cycles, IO adapters, and what is intentionally absent.
  • Configuration — Runtime / Materializer API, Attributes, FusedExecutionConfig, StreamRefSettings, async boundaries, and why there is no config file.
  • datum-net environment variables — DATUM_NET_SHARDED_TOKIO_SHARDS (override shard count), DATUM_NET_SHARDED_TOKIO_MIN_CONNECTIONS (default 64), DATUM_NET_SHARDED_TOKIO_DISABLE (set to 1 to disable sharding). See the datum-net guide for full details.