Repair WebSocket Reconnect Storms

    by Mariusz Wrzeszczynski

    1

    Repair synchronized reconnect bursts, overlapping WebSockets, duplicate subscriptions, heartbeat leaks, auth races, and unsafe replay.

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    Works with the AI tools you already use

    CClaude CodeCCursorCCodex CLIGGitHub CopilotGGemini CLI+17 more

    See it in action

    You say

    Our React/TypeScript dashboard uses one WebSocket wrapper. After a rolling backend deploy, thousands of browsers disconnect together. Every client reconnects after exactly one second, and the heartbeat timeout also schedules reconnect. Sometimes an old socket close handler fires after the new socket connects and schedules a third connection. Each reconnect subscribes again without reconciling the old subscription ID, so some users get duplicate notifications. Repair locally with fake timers and a local WebSocket server. Do not connect to production, change load balancers, or replay client write messages.

    Your agent does

    Reconnect storm found. Fixed-delay retries, duplicate reconnect ownership, and stale callbacks can create overlapping generations and duplicate subscriptions. The repair centralizes reconnect scheduling, adds jitter and generation fencing, scopes heartbeat cleanup, deduplicates subscription restoration, and verifies races with fake clocks. Production network and resume behavior remain unverified.

    What you get

    Implement exponential backoff with jitter for reconnecting clients.Eliminate duplicate subscriptions and event listeners on socket cycling.Fence stale callbacks using monotonically increasing connection generations.Prevent heartbeat timer leaks during component remounts or disconnects.

    About this skill

    Reconnect logic often fails during the exact moment it is needed most: a deploy, transient outage, sleep/wake, or token refresh. Fixed retry delays synchronize browser fleets, multiple reconnect owners create overlapping sockets, stale callbacks spawn new generations, and every reconnect can duplicate subscriptions or listeners.

    Repair WebSocket Reconnect Storms gives an AI coding agent a repository workflow for defining one logical socket owner, generation-fencing callbacks, centralizing reconnect scheduling, adding bounded jittered backoff, cleaning heartbeat timers, deduplicating subscriptions/rooms, and testing reconnect races with fake clocks and local servers.

    It does not connect to production sockets, change proxy settings, or blindly replay side-effecting client messages.

    How to install

    Drop the file into your AI Agent. Works with Claude, Cursor, ChatGPT, and 20+ more.

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