A fix had been deployed two days ago to cache user sessions for “better performance.” Someone had forgotten the eviction policy. Worse—the cache was static. Shared across all threads. It never, ever let go.
“Just a heap dump analyzer online,” she’d say. “It’s like an MRI for a dying program.” heap dump analyzer online
Maya’s pager screamed at 3:14 AM. The kind of scream that meant money was bleeding out. A fix had been deployed two days ago