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# TCP Keep Alive and HTTP Keep Alive Are Not the Same Feature
- URL: https://debugly.dev/tcp-keepalive-vs-http-keepalive/
- Published: 2026-09-03T11:30:00.000Z
- Updated: 2026-10-17T05:49:03.000Z
- Description: They share a name and almost nothing else. One is a kernel probe that fires after two hours of silence. The other is connection reuse you can watch in the…
- Author: Rohit Bhadani
- Tags: Deep Dive, Networking, Debugging

| Parameter              | Default | Meaning                                        |
| ---------------------- | ------- | ---------------------------------------------- |
| tcp\_keepalive\_time   | 7200    | Seconds idle before the first probe            |
| tcp\_keepalive\_intvl  | 75      | Seconds between probes                         |
| tcp\_keepalive\_probes | 9       | Failed probes before the connection is dropped |

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