Issue & Reproduction Steps

Implement Request Cache and Request Deduplication Layer for ProcessMaker.apiClient

Solution

Implemented a lightweight cache and request-deduplication layer for ProcessMaker.apiClient.

The cache supports opt-in GET response caching with a default 5-second TTL, per-request TTL overrides, global enable/disable controls, cache invalidation by URL or pattern, lazy expiration cleanup, and optional debug logging.

Concurrent identical GET requests now share one in-flight Promise and produce a single network request. Completed responses are cached only after successful requests; non-GET and failed requests bypass caching.

Expanded unit coverage for TTL expiry, custom TTLs, failures, non-GET behavior, global cache controls, per-request opt-out, key isolation by request configuration, invalidation, debug logs, and concurrent request deduplication.

Validation
npx jest --runInBand --testMatch '**/tests/js/apiClientCache.test.js'

Related Tickets & Packages

FOUR-31921

Code Review Checklist

• I have pulled this code locally and tested it on my instance, along with any associated packages.
• This code adheres to ProcessMaker Coding Guidelines.
• This code includes a unit test or an E2E test that tests its functionality, or is covered by an existing test.
• This solution fixes the bug reported in the original ticket.
• This solution does not alter the expected output of a component in a way that would break existing Processes.
• This solution does not implement any breaking changes that would invalidate documentation or cause existing Processes to fail.
• This solution has been tested with enterprise packages that rely on its functionality and does not introduce bugs in those packages.
• This code does not duplicate functionality that already exists in the framework or in ProcessMaker.
• This ticket conforms to the PRD associated with this part of ProcessMaker.