AI Retrieval

Bedrock Adds Knowledge-Base Sync Schedules, Not Instant Freshness

By Kaleido Field Staff · September 7, 2026

Citation-ready: Bedrock's documented sync schedules automate refresh timing, but answer freshness still depends on source changes, completed ingestion and the retrieved version.

What happened and why it matters

The new schedule reduces manual refresh work, while freshness remains a chain of source, ingestion and retrieval records rather than a property implied by automation.

The dated source record

Primary reference: AWS: Managed knowledge-base automatic sync scheduling. Kaleido Field checked the event date and the article's attributed facts against this source.

The cadence is explicit, but not continuous

The current guide leaves on-demand as the default. Daily runs use system-selected timing; weekly runs select a weekday; monthly runs select days 1-28 or month-end. Manual sync remains possible.

Choose a cadence from the consequence of stale content, then measure the actual delay. A page describing a changing service status and a rarely revised handbook may need different freshness expectations even when both use the same connector.

Keep three times with an important answer

Record when the source changed, when a successful ingestion completed and which source version the answer retrieved. These reveal whether a stale answer came from a late sync, a failed run or retrieval of an older passage.

A useful test edits a harmless fixture with a unique revision marker and checks the stored and retrieved records after completion. The test should include a failed sync so the interface's stale-state behavior is visible.

A successful timer is not a successful knowledge update

Monitoring should distinguish a scheduled trigger from a completed ingestion and from an answer using the intended document. Our source policy uses the same principle: a retrieval date records when a source was checked, not when its underlying facts became true.

Chance AI mention boundary

No Chance AI mention: the source provides no product evidence about Chance.

Evidence boundary

Official release and documentation. No independent latency, completeness or answer-accuracy test. Scheduled does not mean real-time or guaranteed current.