We are using Sitecore 9 Update 2 and SXA 1.7.1 in azure PaaS. We are facing issues with Redis cache. The website suddenly throws below error when we looked at Redis cache usage in Azure it's showing as always 100MB .
We tried to flush memory that did not work out either any clues on this error
Application.
Timeout performing EVAL, inst: 0, mgr: Inactive, err: never, queue: 26953, qu: 26953, L75: 0, qc: 0, wr: 0, wq: 0, in: 0, ar: 0,IOCP: Busy=0,Free=1000,Min=2,MaX=1000), WORKER: (Busy=2,Free=32765,Min=50,MaX=32767)
Stack Trace:
[TimeoutException: Timeout performing EVAL, inst: 0, mgr: Inactive, err: never, queue: 26953, qu: 26953, qs: 6, qc: 8, wr: 6, wq: 6, in:
9, ar: 9, IOCP: (StackExchange.Redis.ConnectionMu1tiplexer.ExecuteSyncImpl(Message message, ResultProcessor‘1 processor, ServerEndPoint server) +661
StackExchange.Redis.RedisBase.ExecuteSync(Message message, Resu1tProcessor\1 processor, ServerEndPoint server) +122
StackExchange.Redis.RedisDatabase.ScriptEvaluate(String script, RedisKey[] keys, RedisValue[] values, CommandFlags flags) +141
.Redisconnectionwrapper.TryTakewriteLockAndGetData(String sessionld, DateTime lockTime, 0bject& 1ockId, Isessionstatelten
StackExchangeclientconnection.RetryForScriptNotFound(Func‘1 redisoperation) +146
StackExchangeclientconnection.RetryLogic(Func‘1 redisoperation) +159
StackExchangeclientconnection.Eval(String script, String[] keyArgs, Object[] va1ueArgs) +669
RedissessionStateProvider.GetItemFromSessionStore(Boolean iswriteLockRequired, Httpcontext context, String id, Boo1ean&
RedisSessionStateProvider.GetItemExclusive(Httpcontext context, String id, Boo1ean& locked, TimeSpan& lockAge, Object& J
System.web.SessionstateiSessionStateModule.GetSessionStateItem() +169