Unclosed file handles, event listener leaks, circular references, and unbounded caches are silently consuming your resources. MemGuard finds every leak across JS/TS, Python, Java, Go, Rust, and C#. Before OOM kills your process at 3 AM.
They don't throw errors. They don't fail tests. They slowly consume every byte of RAM until your process crashes, your containers restart, and your pager goes off. By then the damage is done. MemGuard catches them at the source — in your code, before they ever reach production.
File descriptors, database connections, network sockets, and streams opened but never closed. The #1 cause of resource exhaustion in server applications.
addEventListener without removeEventListener. Subscriptions without unsubscribe. Every orphaned listener is a function pinned in memory forever.
Objects that reference each other in cycles, defeating garbage collection in older runtimes and causing subtle retention in all of them. MemGuard traces the full reference graph.
Maps, dicts, and arrays that grow without eviction. Your "temporary" cache becomes a permanent memory hog. Detects missing size limits and TTL policies.
useEffect without cleanup returns, subscriptions that survive unmount, intervals left running in dead components. The React memory leak trifecta, caught automatically.
setTimeout and setInterval without clearTimeout/clearInterval. Timers that outlive their context, firing callbacks into garbage-collected scopes.
| Scenario | Without MemGuard | With MemGuard |
|---|---|---|
| Unclosed DB connections | ✗ Discovered at 3 AM via OOM kill | ✓ Flagged at commit time |
| Event listener leaks | ✗ "Why is the tab using 4 GB?" | ✓ Detected before code review |
| useEffect missing cleanup | ✗ Component unmounts, leak remains | ✓ Blocked by pre-commit hook |
| Unbounded cache growth | ✗ Slow OOM over days/weeks | ✓ Warns about missing eviction |
| Circular references | ✗ Silent GC retention | ✓ Reference graph traced |
| Dangling timers | ✗ Callbacks firing into void | ✓ Matched set/clear pairs |
| File handle exhaustion | ✗ "Too many open files" in prod | ✓ Every open tracked to its close |
| Detection coverage | Manual review (error-prone) | 90+ patterns across 6 languages |
Start scanning for free. Upgrade when memory leaks start costing you sleep.
No spam. One email per week max. Unsubscribe anytime.
Install MemGuard in 30 seconds. Find every unclosed handle, orphaned listener, and unbounded cache in your codebase.