Recently my system have a problem like this, suddenly integration latency from API Gateway is higher than usual, especially at night.
Check Logs Insight, I saw these happened.
Somehow, for some request, it took 7s to finish integration. At first I think this problem is from lambda and I also checked it, but seems like it's not.
Lambda took only more than 1s (higher than normal a little) to finish execute and it also started right after integration completed.
Please have anyone solved these kind of problem before ? can you plaease give me some advice ?