Cache A Website For Better Performance?

Apr 12, 2010

I am a web designer and usually design corporate web sites which often does not require update. So I want to cache the output for one day. How can I do this?

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We have a wfc layer that wraps the business classes and database access and use a client that lives on the database layer. Amongst our group we are attempting to form standards. Some want to have the client call the web method and pass the page they are requesting and the page size. Pass that to the database and then page in SQL Server use RowNum.Some want to cache the full list of objects in http cache on the service tier and page in memory. They concern here is memory use on the server.

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What are the "optimal" parameters for creating an AppFabric cache when you will be storing session state in the cache? MSDN Cache-Related Commands

Powershell command line:

New-Cache [-CacheName] <String> [-Eviction <String>] [-Expirable <String>] [-Force [<SwitchParameter>]] [-NotificationsEnabled <String>] [-Secondaries <Int32>] [-TimeToLive <Int64>]


Since I don't want my sessions to be removed unless the session has been abandoned either via code or Session Timeout...For eviction, I would think "None" and for expireable, I would think False.I have tested and calling Session.Abandon does remove the object from the cache. I have also tested to see if by extending my session, the session object in cache is also extended. This does seem to work the "correct" way.

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Data Cache Support Background Population Of Cache Entries?

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We have a data driven ASP.NET website which has been written using the standard pattern for data caching (adapted here from MSDN):

public DataTable GetData()
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The trouble with this is that the call to GetDataFromSQL() is expensive and the use of the site is fairly high. So every five minutes, when the cache drops, the site becomes very 'sticky' while a lot of requests are waiting for the new data to be retrieved.

What we really want to happen is for the old data to remain current while new data is periodically reloaded in the background. (The fact that someone might therefore see data that is six minutes old isn't a big issue - the data isn't that time sensitive). This is something that I can write myself, but it would be useful to know if any alternative caching engines (I know names like Velocity, memcache) support this kind of scenario. Or am I missing some obvious trick with the standard ASP.NET data cache?

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C# - Maximum Length Of Cache Keys In HttpRuntime.Cache Object?

Feb 24, 2010

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...

we have so many parameters that the cache key is several hundred characters long. 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.

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ADO.NET :: Use HttpContext.Current.Cache (system.web) For Cache Data Something In Project

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I have use Nhibernate in my MVC Project by me known, Nhibernate have cache on Session and Object. now, I want use HttpContext.Current.Cache (system.web) for cache data something in project. my code same that have problem, haven't it. and that's right or wrong.

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Architecture :: Distributed Caching / Keeping Cache In Sync Between Multiple Webservers Or Even Better Farm Cache Management To Another Server?

Feb 26, 2010

I've got a web application that runs of a state server. It looks like soon it may need to distributed and there will be two web servers behind a load balancer.

This works great for session state but my next challenge is Cache

My application leverages heavily of cache. I understand ASP.Net 4.0 will be offering more here but nothing much has been said about the how too.

There are two challenges that I face

1). Each webserver will have its own copy of cache whereas it would be more efficient to put this to a third server the same as session state is put to state server.

2). The real challenge is keeping cache in sync if a simple dataset derived from the database is changed my code dumps that cache item and reloads the cache. That's all well on one webserver but webserver number two wont know to drop that particular cache item and reload it. This could cause some unexpected problems in the application.

For scenario number 2 I could attempt to do some smart coding so server number two knows to dump the cache and reload it.

My guess is someone else has already been here before and there's probably a better implementation approach rather than writing extra code.

Does anyone know how I could achieve the goal of keeping Cache in sync between multiple webservers or even better farm Cache management to another server?

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