RE: HttpRuntime Cache threading

#1

Thus wrote Erik,

Quote:

Uh... that's pretty shocking. Your sample indicates that I need to
define my own lock object. What if other libraries also use the app
cache??? They won't share my lock.

None of the articles I've seen online use locks. If this is true then
there must be a LOT of buggy web apps out there...

Agreed. Even books like Essential ASP.NET specifically metion that Cache
is thread-safe.

Comparing http://msdn.microsoft.com/library/de...classtopic.asp
and http://msdn2.microsoft.com/en-us/lib...ing.cache.aspx
makes me really wonder -- either the newer documentation is wrong or it is
one truly hideous breaking change...

Cheers,
--
Joerg Jooss
news-reply (AT) joergjooss (DOT) de

#2

The cache object you are using in ASP.NET is static.

Do you create an instance of it when you use Cache?
No!

So it is public static (shared in VB.NET), and thread safe.

No need to play wo-doo dance around thread locks with ASP.NET cache

Happy coding

*** Sent via Developersdex http://www.developersdex.com ***

#3

Thus wrote H (AT) 2dC0d (DOT) 32,

Quote:

The cache object you are using in ASP.NET is static.

Do you create an instance of it when you use Cache? No!

So it is public static (shared in VB.NET), and thread safe.

That's a false conclusion. All relevant Cache methods like Add(), Get(),
Insert() or its indexer are instance methods. Cache is also neither a static
meber in Page, nor in HttpContext.

Personally, I think the Windows SDK docs are simply wrong. So yes, no fiddling
with locks required ;-)

Cheers,
--
Joerg Jooss
news-reply (AT) joergjooss (DOT) de

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