TCP Keepalive Settings

TCP keepalive settings are configuration parameters that determine how a connection maintains its state during periods of inactivity. These settings define how often a probe is sent to the peer and how many failures are allowed before the connection is considered dead.

In the context of financial trading, tuning these settings is crucial for rapidly detecting broken connections. If the keepalive interval is too long, the system may continue to route orders through a dead connection, leading to execution delays.

If it is too short, the system may generate excessive network traffic or prematurely close healthy connections. Properly configured keepalive settings ensure that the trading application remains responsive to infrastructure failures, enabling quick failover.

It is a low-level but essential component of system reliability, ensuring that the network layer correctly signals the status of the connection to the application layer.