Json Rpc Lock Bundle Laravel Package

Product Decisions This Supports

• Build vs. buy for RPC concurrency control: whether to add a lock layer at the JSON-RPC boundary or rely on Laravel’s native Cache::lock() / WithoutOverlapping middleware. This package only wins if you need method- or request-level lock semantics that are awkward to express with Laravel primitives.
• Reliability and idempotency roadmap: if clients retry RPC calls or multiple workers can process the same method, a lock bundle turns “duplicate mutation” incidents into an explicit, testable policy (lock key, TTL, wait vs. fail, error code).
• API feature scoping: informs decisions on per-method locking, lock keys derived from request id / idempotency key / method+params hash, and behavior when lock acquisition fails.
• Adoption risk for 2.0.0: the release is a major version bump with no published notes beyond a changelog link. That supports a “pin, audit, pilot” decision rather than broad rollout.
• Platform fit: the *-bundle naming strongly implies a Symfony bundle rather than a Laravel package. This supports deciding whether to evaluate a Laravel-native alternative or build an adapter instead of assuming drop-in compatibility.

When to Consider This Package

Consider it when:

• You expose JSON-RPC endpoints where duplicate or concurrent execution is harmful — payments, inventory, provisioning, state transitions.
• You need locking keyed to RPC request identity or method, not just queue-job overlap.
• You are on Symfony, or are willing to bridge/adapter it into Laravel, because the bundle convention implies Symfony DI/configuration rather than Laravel service providers.
• You can absorb the 2.0.0 upgrade cost: review the 1.0.1...2.0.0 changelog, confirm breaking changes, pin the version, and write integration tests around lock acquisition and failure.

Look elsewhere when:

• You are a standard Laravel app with Redis or database cache — Cache::lock() and WithoutOverlapping already cover most needs with less surface area.
• You need first-class Laravel observability, queue integration, or Horizon metrics.
• You require a documented changelog, security policy, and active maintenance; 2.0.0 currently provides only a compare link.
• Locking can be handled more simply at the data layer with unique constraints, transactions, or SELECT ... FOR UPDATE.

How to Pitch It (Stakeholders)

Executive summary: This is a small, targeted dependency for preventing duplicate or concurrent JSON-RPC operations — the kind of bug that causes double charges or inconsistent state. It is low-effort to pilot, but 2.0.0 is a major release with no published notes, so we should pin it, validate the changelog, and run it behind tests before committing. If it does not clearly beat Laravel’s built-in locks, we skip it.

Engineering summary: Evaluate it as a locking layer for JSON-RPC methods. Confirm the storage backend (Redis/DB), lock key design, TTL, acquisition timeout, and failure semantics. Treat 2.0.0 as breaking: diff 1.0.1...2.0.0, verify Symfony vs. Laravel fit, and add contract tests for lock contention, release-on-error, and timeout behavior. The fallback is Cache::lock() with an idempotency-key convention.