Problems with Lists when using StackExchange.Redis C# client in Azure WorkerRole

[Serge Cherevko]

I keep getting the error when try to do anything with lists:

StackExchange.Redis.RedisServerException was caught

  HResult=-2146233088

  Message=WRONGTYPE Operation against a key holding the wrong kind of value

  Source=StackExchange.Redis

  StackTrace:

       at StackExchange.Redis.ConnectionMultiplexer.ExecuteSyncImpl[T](Message message, ResultProcessor`1 processor, ServerEndPoint server) in c:\TeamCity\buildAgent\work\58bc9a6df18a3782\StackExchange.Redis\StackExchange\Redis\ConnectionMultiplexer.cs:line 1795

       at StackExchange.Redis.RedisBase.ExecuteSync[T](Message message, ResultProcessor`1 processor, ServerEndPoint server) in c:\TeamCity\buildAgent\work\58bc9a6df18a3782\StackExchange.Redis\StackExchange\Redis\RedisBase.cs:line 79

       at StackExchange.Redis.RedisDatabase.ListLeftPush(RedisKey key, RedisValue[] values, CommandFlags flags) in c:\TeamCity\buildAgent\work\58bc9a6df18a3782\StackExchange.Redis\StackExchange\Redis\RedisDatabase.cs:line 623

like

long zzz = cacheRedis.ListLength(redisKey)

or

cacheRedis.ListLeftPush(redisKey, redisValue[]);

Can anybody help here? 

     

[Jan-Erik Rediger]

the output includes the actual error message from Redis:

> * Message=WRONGTYPE Operation against a key holding the wrong kind of value*

This should explain it. Whatever "redisKey" is in your code, it is not a
list in Redis and thus you can't use LLEN (ListLength) to get the
length.

If you're unsure what type the value has "redisKey" points to use "TYPE
keyname" (probably something like `cacheRedis.Type(redisKey)` in your
code)

On Thu, Aug 28, 2014 at 08:33:31AM -0700, Serge Cherevko wrote:
> I keep getting the error when try to do anything with lists:

> *StackExchange.Redis.RedisServerException was caught*
> * HResult=-2146233088*
> * Message=WRONGTYPE Operation against a key holding the wrong kind of
> value*
> * Source=StackExchange.Redis*
> * StackTrace:*
> * at

> StackExchange.Redis.ConnectionMultiplexer.ExecuteSyncImpl[T](Message
> message, ResultProcessor`1 processor, ServerEndPoint server) in
> c:\TeamCity\buildAgent\work\58bc9a6df18a3782\StackExchange.Redis\StackExchange\Redis\ConnectionMultiplexer.cs:line

> 1795*
> * at StackExchange.Redis.RedisBase.ExecuteSync[T](Message message,

> ResultProcessor`1 processor, ServerEndPoint server) in
> c:\TeamCity\buildAgent\work\58bc9a6df18a3782\StackExchange.Redis\StackExchange\Redis\RedisBase.cs:line

> 79*
> * at StackExchange.Redis.RedisDatabase.ListLeftPush(RedisKey key,

> RedisValue[] values, CommandFlags flags) in
> c:\TeamCity\buildAgent\work\58bc9a6df18a3782\StackExchange.Redis\StackExchange\Redis\RedisDatabase.cs:line

> 623*
>
> like
>
> *long zzz = cacheRedis.ListLength(redisKey)*
>
> or
>
> *cacheRedis.ListLeftPush(redisKey, redisValue[]);*
>
>
> Can anybody help here?
>
>
>
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[Marc Gravell]

Everything Jan-Erik said. Just for completeness: it is `.KeyType(key)`. The "Key*" method-name prefix includes all the methods that don't depend on the data type - rename, delete exists, type, etc.

Marc (StackExchange.Redis)