JSON Patch and Merge Patch Reference Deck
Recall when and how to use JSON Patch and JSON Merge Patch safely.
Operation What does JSON Patch test do? It checks that a value at a path matches the expected value before later operations proceed. Use it as an optimistic guard, such as testing /version before replacing a field. Compare JSON Patch vs Merge Patch Patch says what to do; Merge Patch says what the object should partially become. Objection Let's send the whole object back; it is simpler. The client only loaded one tab of a large editable resource. Your line Full replacement is simple only when the client owns the whole current resource. Here it risks overwriting fields the client…
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