Note 4 sections
Validating the Schema at the Edge of the Queue
A message's data is an untyped contract the queue won't check. Validate it at the edge: producer before publish, consumer as a safety net.
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#schema
3 entries: Note, Essay, Tool.
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- Tool
JSON Schema Backward-Compatibility Diff
Diff two JSON Schemas: is the change backward-compatible, or a breaking one that needs a new message version? Runs in your browser.
- Essay 5 sections
Schema Evolution Without Breaking the Contract
You can't change a cross-service contract atomically. The rule: additive is safe, a breaking change needs a new identity — consumers upgrade first