In my application I use memcache to store some data for a subsequent request (usually issued within 10-20 seconds after the initial caching) that needs to respond as quickly as possible. Any delay greatly hurts the user experience as it results in a significant pause in an automated phone call while the the required data is rebuilt.
I've got three app deployments with the same code base (at least the same in any way AFAICT that could matter for this). It seems that in two that I have redeployed since 1.4.0 came out (cliniconexdev,cliniconextest), the subsequent request consistently doesn't find the cached entry. In the version that hasn't been redeployed since 1.4.0 (cliniconexapp) the entry is found 100% of the time. On the development server, the caching still works fine and I get a hit every time. When I cache the data I have an immediate retrieval in the same thread that verifies that it is infact there, and in all cases it is found fine at that point. But for the two app instances with the problem, by the followup web request it appears to be gone from, or not yet available in, the cache. Traffic is light ATM on all app instances and memcache quotas are barely touched. I have billing and reserved instances enabled on all three which is really the only change I've made since 1.4.0 came out. Anyone else seen this or have any ideas? The only thing I can think of is that maybe new memcache entries aren't available to all jvm instances within that 10-20 seconds and I'm seeing it now because I have multiple reserved instances (at least on apps deployed since 1.4.0). If I can get that behavior confirmed I'll have to figure out how to work around it. -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
