List the events your go‑to systems emit, map owners, and define a contract for each: fields, types, and expected delivery patterns. Version those contracts so downstream consumers remain stable when sources evolve. Document assumptions, such as deduplication keys or acceptable delays. With this foundation, small automations become predictable building blocks rather than brittle hacks. New teammates can contribute safely because they understand the exact shape of signals and the promises around them.
Events can arrive twice, out of order, or not at all. Design each action to be idempotent by storing checksums or a processed‑at marker. Add thresholds that prevent runaway updates, and include circuit breakers that pause writes when anomalies spike. These simple guardrails stop rare glitches from becoming widespread corruption. You keep autonomy for builders while preserving data integrity, and the team sleeps better knowing a single retry won’t duplicate a mess.
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