c# - Caching Entities causes unwanted inserts -

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if cache entire table:

static list<table1> table1cache = context.table1.tolist();

then use associate:

var context = new context(); var t2 = new table2(); t2.mytable1reference = table1cache.single(x=>x.id == paramintid); context.savechanges();

a new row inserted table1, because of third line. ef thinks new entity. know can somethings attaching cache when create de context(i have 1 context per request), or use mytable1referenceid = table1cache.single(x=>x.id == paramintid).id;

but not secure, can forget sometimes, there solution?

yes, makes sense because entity not associated current context. therefore ef thinks it's transient , saves new instance.

if caching across contexts, don't want store object itself. related context. instead want store data in cache. serializing , deserializing entity. need associate entity when current context next time it's retrieved cache can save change both cache , database.

if sounds lot, is. keeping 2 data stores synchronized not easy problem solve. take @ implementation of 2nd level cache nhibernate.


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