Regime Feeds, Volume Workers, and Curation in Candle Service

A Market-Regime Feed

I added a Binance five-minute market-regime feed (799df672). Regime context is what turns a raw candle series into something a strategy can condition on—knowing whether the market is trending or chopping changes how a signal should be interpreted.

DEX Metadata and Pool Filtering

I captured DEX metadata on pools, backfilled existing rows, and added filtering by dex_id (7aef7508). Then I fixed a schema bug by not creating the idx_pools_dex index in schema.sql (df521be9), avoiding a conflict with the migration path. I documented the drag, regime, and DEX-filter endpoints (b5436e25).

Worker Reliability

I kept the heartbeat alive when Jupiter rejects a token (bece325e) and initialized worker heartbeats at construction with a start period (a132fdd8). Both fixes address the same class of problem: a worker that’s actually fine but looks dead. A rejected token shouldn’t kill the heartbeat, and heartbeats should exist from the moment the worker starts rather than after its first loop.

Patching Volume

I added a boundary-aligned VolumeWorker to patch Jupiter candle volume (3bf9ce8c). Volume data from one source can be incomplete on boundary candles, and aligning the patch to candle boundaries keeps the series consistent.

Auditing

I did an audit pass covering heartbeat consistency, constant-time auth comparison, a WAL checkpoint, and assorted fixes (dad54f78). Constant-time comparison on an API key check is basic hygiene that’s easy to skip until it matters.

Adding and Removing a Concept

I added a held-pool hot tier and daily shit-coin curation (c2e45df1), then later dropped the held-pool concept entirely and made /backfill idempotent (a8e1efce). I also added a composite tradability rank with hot and warm Jupiter tiers (bdb5ca76) and cut pool_state aggregate churn while deduping identical ticks and moving to an hourly WAL checkpoint (41d5d0e8).

Dropping the held-pool concept on the same day I added its documentation is the right call. A concept that complicates the model without earning it should go, and the sooner the better.

The Lesson

Velocity includes subtraction. Adding features is easy; recognizing a feature is net-negative and removing it the same day is the harder, better discipline.