Technical area
Reliable ingestion
Make pagination, retries, partial data and replay behavior explicit.
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Prove that pagination finished before publishing a dataset
Reconcile page metadata, expected totals, unique identities and mutable-source behavior instead of equating a successful first response with a complete download.
Retry failures within a bounded, provider-aware budget
Classify transient and permanent failures, respect Retry-After and coordinate request rates without turning a temporary outage into an endless ingestion loop.
Make replay safe and commit checkpoints atomically
Prevent duplicate observations and lost pages by separating fetch attempts, durable records and the checkpoint that declares a run complete.
Distinguish HTTP cache freshness from research-data freshness
Use validators and cache policies correctly while separately measuring retrieval age, observation age and revision coverage.