* Update TenantEntryCache workload refresh to handle fault injection
Description
diff-1: Add trace event to log wait
Patch update TenantEntryCache::testCacheRefresh to better handle fault
injection causing longer cluster recovery/availability delays. The
test is modified to loop for a threshold time waiting for next round
of tenantCache refresh cycle to happen. Otherwise throws 'timed_out'
error.
Testing
devRunCorrectness - 100K
* Implement TenantCacheEntry in-memory cache
Description
diff-4: TraceEvent usage improvements
diff-3: Address review comments
diff-2: Add APIs to read counter values, test improvements
diff-1: Address review comments
Major changes includes:
1. Implements an actor that enables an in-memory caching of
TenantCacheEntry object, allowing the caller to embed custom
information along with TenantCacheEntry.
2. The cache follows read-through cache semantics where the entry
gets loaded from underlying database on a miss.
3. The cache implements a "periodic poller" to refresh known Tenants
by consulting the database. Once a database keyrange-watch feature is
available, cache shall be updated.
Bonus:
Implement a 'recurringAsync' addition to genericActors allowing caller
to schedule a periodic task registering an "actor functor"; the routine
'waits' for the actor unlike existing 'recurring' implementation.
Testing
TenantEntryCache workload
devCorrectnessRun - 100K
A.J. Beamon