Ruben Fiszel 5970510cf6 perf(backend): gate asset producer-change event on write-set changes (#9672) ...

* perf(backend): only emit asset producer-change event on write-set changes

Data Pipelines (#9193) made every script deploy emit a
`notify_asset_producer_change` event: `clear_static_asset_usage` inserted
into `notify_event` unconditionally on every clear, and the per-asset
insert path emitted nothing. So a plain script with no assets — the
overwhelming majority of deploys — wrote a `notify_event` row that made
every worker drop its `ASSET_PRODUCER_WRITES_CACHE` entry instance-wide,
needlessly thrashing the cache the feature added.

That cache only tracks script rows with write access (`usage_access_type
IN ('w','rw')`), so a deploy changes it only when the script gains or
loses a write producer. Gate the event on exactly that:

- `clear_static_asset_usage` / `clear_static_asset_usage_by_script_hash`
  emit only when the delete removed a 'w'/'rw' row (via `RETURNING`).
- `insert_static_asset_usage` emits only when it actually inserts a
  'w'/'rw' script row (no-op `ON CONFLICT`, read-only, and flow usage
  stay silent).

Plain, read-only, and flow deploys now emit nothing; producer-changing
deploys still invalidate, atomically and visible-only-on-commit as
before. Adds a test asserting the emit/no-emit matrix.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* perf(backend): dedup producer-change notify on write-asset redeploys

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* fix(backend): derive replace write-set from persisted rows; document auth contract

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* docs(backend): correct replace_static_asset_usage call-site comment

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-06-19 13:49:32 +00:00

..

src

perf(backend): gate asset producer-change event on write-set changes (#9672)

2026-06-19 13:49:32 +00:00

Cargo.toml

feat: Data Pipelines alpha (#9193)

2026-06-18 18:09:02 +02:00