caching question: msg processor clusters in different regions and same planet

Google Cloud Apigee
1

hello,

i have two mp/r clusters, 1 in each region (dc1 and dc2) and they are in the same planet. what we are seeing is that the a proxy creates a cache in dc1, that cache is not available in dc2. i checked the cassandra ring is available in both dc1 and dc2. i thought if the mp creates cache in dc1 and the cache is eventually persisted in casandra. and when the mp in dc2 tries to retrieve the cache and cannot find it in memory, it would look into cassandra. but this is not the case.

what does it take so that the mp in dc1 creates a cache the mp in dc2 can immediately retrieve it?

thx

2

@leo sun

there are 2 types of cache l1 and l2…l1 cache is not persisted on C*; l2 cache is what persists so it really depends on how you setup your caching.

3

i worked with support and this turns out to be a potential product bug, support sent the bug to engineering i was told. no work around, the cache replication btw mp in different regions work from time to time.