caching

How to disable MySQL Query Caching

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This could be due to the cache of the data itself, and not the query cache. To make sure, you can disable the query cache for a single statement by adding SQL_NO_CACHE after your SELECT statement. Ex: SELECT SQL_NO_CACHE field FROM table.

Physical or virtual addressing is used in processors x86/x86_64 for caching in the L1, L2 and L3?

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The answer to your question is – it depends. That’s strictly a CPU design decision, which balances over the tradeoff between performance and complexity. Take for example recent Intel Core processors – they’re physically tagged and virtually indexed (at least according to http://www.realworldtech.com/sandy-bridge/7/). This means that the caches can only complete lookups in pure physical … Read more

Use functools’ @lru_cache without specifying maxsize parameter

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You have to at least call lru_cache without args: @lru_cache() def f(): #content of the function This way, lru_cache is initialized with default parameters. This is because decorators in python (with the @ notation) are special functions which are evaluated and called when the interpreter is importing the module. When you write @decorator_name you tell … Read more

Looking for a very simple Cache example

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.NET provides a few Cache classes System.Web.Caching.Cache – default caching mechanizm in ASP.NET. You can get instance of this class via property Controller.HttpContext.Cache also you can get it via singleton HttpContext.Current.Cache. This class is not expected to be created explicitly because under the hood it uses another caching engine that is assigned internally. To make … Read more