Redis serialization error for Caching API

[jbhg]

Cache API is working correctly when called explicitly (eg. in a method, Cache.getOrElse(...)), but not from the @Cached annotation.

Redis is configured correctly. From the logs:

[info] application - Redis Plugin enabled. Connecting to Redis on localhost:6379 with timeout 2000.
[info] application - Redis Plugin pool configuration: redis.clients.jedis.JedisPoolConfig@5037dd45[maxIdle=8,minIdle=0,maxActive=8,maxWait=-1,whenExhaustedAction=1,testOnBorrow=false,testOnReturn=false,testWhileIdle=true,timeBetweenEvictionRunsMillis=30000,numTestsPerEvictionRun=-1,minEvictableIdleTimeMillis=60000,softMinEvictableIdleTimeMillis=-1,lifo=true]

Plugin is:

550:com.typesafe.plugin.RedisPlugin

Trying to cache a Result (SimpleResult):

@Cached(key = "list")
public static Result list()
{
    return ok(index.render("message"));
}

Seeing error:

[warn] application - could not serialize key:list and value:SimpleResult(200, Map(Content-Type -> text/html;charset=utf-8)) ex:java.io.IOException: could not serialize: SimpleResult(200, Map(Content-Type -> text/html;charset=utf-8))

Play 2.2.2 with both "com.typesafe" %% "play-plugins-redis" % "2.2.0" in libraryDependencies and resolvers += "Sedis repository" at "http://pk11-scratch.googlecode.com/svn/trunk/"

Looks to me like the SimpleResult object is not being serialized correctly.

[wgriffiths]

Did you find a solution for this?

[jasonwill2433]

Anyone has a solution for this?

[jasonwill2433]

I believe, the Redis play plugin doesn't have a @cached helper.

By referring to Play documentation: https://www.playframework.com/documentation/2.4.x/JavaCache#Caching-HTTP-responses, I can easily write a customized action composition to handle this. Remember that "Play HTTP Result instances are safe to cache and reuse later."