Kamailio Transactions: Why Stateful Forwarding Changed My SIP Debugging
Once I separated stateless forwarding from transaction-aware forwarding, retransmissions, replies and failure handling in Kamailio became much easier to reason about.
transactions
Commit and Rollback Rates Reveal Database Behavior
Database traffic volume looked normal even when applications were rolling back more transactions than usual.
SIP Transactions and Dialogs Finally Made Call Flow Less Confusing
SIP became easier to debug once I stopped treating an entire call as one exchange and separated individual transactions from the dialog that ties them together.
One Deadlock Is Worth Recording
A PostgreSQL deadlock can resolve automatically by aborting one transaction, leaving the service apparently healthy after the incident.