The flagship recommendation engine—code-named Minotaur —had collapsed. Not a slow leak. A full, head-on crash. The error logs were a wall of red text, pointing at nothing obvious. Just a terse message: OutOfMemoryError: Java heap space.
She copied the stack trace, pasted it into Slack, tagged the backend team, and typed: Cache is immortal. Roll back. I’ll patch the eviction in twenty.
The online analyzer offered a button. She clicked it. The shortest path was three hops. No soft references. No weak references. Just a steel chain of hard references from a static singleton. heap dump analyzer online
Months later, when people asked how she debugged a 14GB crash in under an hour, she’d shrug.
Maya’s pager screamed at 3:14 AM. The kind of scream that meant money was bleeding out. The error logs were a wall of red
She clicked the view. The analyzer sorted objects by retained memory. The top offender was a class she didn’t recognize: CachedUserSession .
She dragged the 14GB file into the browser window. A spinner. Three seconds. Roll back
Then the analyzer opened.