Maximum length of cache keys in HttpRuntime.Cache object?
asp.net, c#, caching, dictionary
Solution
Internally, Dictionary uses the hash code of the key you give it. Effectively every key is stored as an integer.
You have nothing to worry about.
Problem
We are using HttpRuntime.Cache API in an ASP.NET to cache data retrieved from a database. For this particular application, our database queries feature a LOT of parameters, so our cache keys look something like this: table=table1;param1=somevalue1;param2=somevalue2;param3=somevalue3;param4=somevalue4;param5=somevalue5;param6=somevalue6... etc... For some queries, we have so many parameters that the cache key is several hundred characters long. My question: is there a limit to the length of these cache keys? Internally, it is using a dictionary, so theoretically the lookup time should be constant. However, I wonder if we have potential to run into some performance/memory problem.