c# - Fody - method caching -
i using fody method cache (https://github.com/dresel/methodcache) first time. doing wrong because following code not work:
static void main() { console.writeline("begin calc 1..."); var v = calc(5); console.writeline("begin calc 2..."); //it last same first function call v = calc(5); console.writeline("end calc 2..."); } [cache] static int calc(int b) { thread.sleep(5000); return b + 5; } what should use following: first call: cache arguments keys , return value value. other call: if cache[arg1, arg2,...] exist return cache value without completing function ? (using cache attribute)
as stated in github issue, static method caching added in 1.3.1.
as methodcache.fody designed, have add cache getter class contains methods should cached , implement cache. can program own cache or use adapter existing cache solutions (see documentation of https://github.com/dresel/methodcache).
the minimum code sample (with basic dictionary cache implementation) this:
namespace consoleapplication { using system; using system.collections.generic; using system.threading; using methodcache.attributes; public class program { private static dictionarycache cache { get; set; } [cache] private static int calc(int b) { thread.sleep(5000); return b + 5; } private static void main(string[] args) { cache = new dictionarycache(); console.writeline("begin calc 1..."); var v = calc(5); // return cached value console.writeline("begin calc 2..."); v = calc(5); console.writeline("end calc 2..."); } } public class dictionarycache { public dictionarycache() { storage = new dictionary<string, object>(); } private dictionary<string, object> storage { get; set; } // note: methods contains, retrieve, store must following: public bool contains(string key) { return storage.containskey(key); } public t retrieve<t>(string key) { return (t)storage[key]; } public void store(string key, object data) { storage[key] = data; } } } however more sophisticated solution use service class, icache interface getter , contructor injection of cache. icache wrap existing caching solutions.