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TimelaketimelakeThe open time-series lakehouse.
v0 · Apache 2.0 · Contribute · GitHubBuilt on Apache Arrow, Apache DataFusion, Apache Parquet, and Apache Iceberg.
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Milestone

Writes from JavaScript

Done0.6.0Updated 2026-10-17View on GitHub

Append to tables and keep them compacted from Cloudflare Workers and other JavaScript runtimes, in fixed memory.

Specs

  • 13Writes from WebAssemblyDone0.6.0
  • 19CompactionDone0.1.0, 0.5.0, 0.6.0, 0.7.0, unreleased
  • 11AppendsDone0.1.0, 0.5.0, 0.6.0, 0.7.0, unreleased

Summary

Append to and maintain tables from Cloudflare Workers, Node, Deno, Bun and browsers with the WebAssembly library. The write path and the streaming compaction it needed (memory of one batch per input, so a 128 MB Worker can compact a day) are shared with the engine, which got 4× less memory and 3× faster compaction from it.

History

  • 2026-10-17: built and measured in workerd (0.6.0)
  • 2026-10-19: milestone written when the specs were regrouped one per feature.