Transaction log: What does tcp_miss/500 indicate?

[s.buskus]

I have some users complaining they are not seeing fresh data from a web server. When I check the transaction log I see a buch on TCP_MISS/500. Does this mean the requested object was not in the table and it was not refreshed becasue the server returned an error?

[#2]

With some TCP_HIT found linked to the same object before, the object is still in the cache. So, even if there is issue with communication between the cache and the web server, the object should be retrieved from the cache. But TCP_MISS means it isn't in the cache. You could try upgrading the ACNS to the latest version and check if you are receiving this message.