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  • Lars Peter Larsen 3 posts 73 karma points
    Nov 06, 2020 @ 13:06
    Lars Peter Larsen
    0

    "Distributed cache is not updated" on Azure single server (not load-balanced)

    We are running Umbraco 7.15.5 in an Azure web app. It is just a single web app running in a single instance, so no load-balancing.

    About once a week, I receive between 1 and 50 "Distributed cache is not updated" errors:

    Message: DISTRIBUTED CACHE IS NOT UPDATED. Failed to execute instructions (id: 4932, instruction count: 1). Instruction is being skipped/ignored

    Exception and stacktrace: System.NullReferenceException: Object reference not set to an instance of an object. at Umbraco.Web.Cache.MediaCacheRefresher.ClearCache(JsonPayload[] payloads) at Umbraco.Web.Cache.MediaCacheRefresher.Refresh(String jsonPayload) at Umbraco.Core.Sync.DatabaseServerMessenger.NotifyRefreshers(IEnumerable1 instructions, HashSet1 processed) at Umbraco.Core.Sync.DatabaseServerMessenger.ProcessDatabaseInstructions(IReadOnlyCollection1 instructionBatch, CacheInstructionDto dto, HashSet1 processed, Int32& lastId)

    The site however is running just fine.

    I have verified that distributedCall enable="false" is set in umbracoSettings.config.

    Any tips for either fixing the error or getting rid of the warning?

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