Base incident

Mainnet Flashblocks WebSocket Connection Instability

Minor Resolved View vendor source →

Base experienced a minor incident on November 4, 2025 affecting Flashblocks, lasting 13d. The incident has been resolved; the full update timeline is below.

Started
Nov 04, 2025, 03:32 PM UTC
Resolved
Nov 17, 2025, 03:34 PM UTC
Duration
13d
Detected by Pingoru
Nov 04, 2025, 03:32 PM UTC

Affected components

Flashblocks

Update timeline

  1. investigating Nov 04, 2025, 03:32 PM UTC

    We are currently investigating degraded connection stability to the Base Mainnet WebSocket endpoint for Flashblocks `wss://mainnet.flashblocks.base.org/ws`. Applications and nodes may experience intermittent connection drops to that endpoint.

  2. identified Nov 12, 2025, 05:38 AM UTC

    We have identified bottlenecks with the Websocket endpoints distributing Flashblocks. Between Nov 5-10, several changes were made that reduced connection drops by 50%. However, investigation continues in order to further reduce connection instability and lower the latency in receiving messages. Updates will be posted here as progress is made.

  3. resolved Nov 17, 2025, 03:34 PM UTC

    We have made improvements to the handling of rate limits in order to provide a more stable endpoint for Flashblocks.