Deno Deploy isolate memory limit exceeded during KV operations

Isolate Memory Exhaustion

Deno Deploy runs user code in V8 isolates with a consumption-based pricing model suited for low-traffic workloads. The isolate architecture enforces strict memory ceilings that are lower than traditional container-based runtimes. When an application performs Deno KV reads or writes that materialize large datasets in a single request, the isolate can hit its memory limit and terminate the request without a configurable warning.

Documentation does not publish the exact per-isolate memory quota, nor does the dashboard expose per-request memory metrics. This makes capacity planning difficult for workloads that occasionally process larger payloads while remaining low-traffic overall.

• What is the enforced memory limit for a Deno Deploy isolate in the current pricing tier?
• Is there a runtime API or dashboard metric to observe isolate memory usage per request?
• Does Deno KV streaming or cursor-based iteration reduce peak memory pressure compared to bulk reads?