C# - Web Application Cache Versus Database Cache

Jan 14, 2010

Im building a image gallery which reads file from disk, create thumbnails on the fly and present them to the user. This works good, except the processing takes a bit time.

I then decided to cache the processed images using the ASP .NET Application Cache. When a image is processed I add the byte[] stream to the cache. As far as I know this is beeing saved into the system memory. And this is working perfect, the loading of the page is much faster.

My question is if there are thousands of images which gets cached in the Application Cache, will that affect the server performance in any way?

View 3 Replies


Similar Messages:

Application Versus Session / Cache

Feb 23, 2011

What is an appropriate use case for all of the above? It seems session and cache are quite similar, and I can't think of much use for application.

View 3 Replies

SPCache Versus HttpRuntime.Cache

Mar 27, 2011

I have a SharePoint 2010 Farm and want to use object caching for my own custom objects.

Since it's an ASP.net Application at it's core, I could use HttpRuntime.Cache. On the other hand, SharePoint 2010 offers it's own SPCache.

Why would I choose SPCache over the HttpRuntime.Cache one?

View 2 Replies

Is It Acceptable To Cache An Instance Of The Database Connection On Application Start

Jan 5, 2010

Is it acceptable to cache an instance of the database connection on application start?

Looking at the MSDN documentation on thread safety, I quote:

Any public static [...] members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Given that, is it acceptable/safe for code such as this example below:

[code]...

View 1 Replies

C# - Implement System.Web.Caching.Cache Object In A Controller To Cache Specific Query?

Mar 29, 2010

Is it correct to implement my caching object like this in my controller :

[code]....

And I Use it like this :

[code]....

View 1 Replies

Architecture :: Cache The Full List Of Objects In Http Cache On The Service Tier And Page In Memory?

Feb 25, 2011

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.

Which would be best for a medium number of users with potentially large number of records to manage (say 30K) Is it better to cache them all in memory and work from there or page at the database as the application scales?

View 1 Replies

New-Cache Parameters For AppFabric Cache When Storing.NET Session State

Jul 28, 2010

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>]

[code]...

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.

View 1 Replies

Data Cache Support Background Population Of Cache Entries?

Aug 1, 2010

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()
{
string key = "DataTable";
object item = Cache[key] as DataTable;

[code]...

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?

View 3 Replies

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.

View 1 Replies

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

Sep 13, 2010

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.

View 2 Replies

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?

View 2 Replies

Is Page Output Cache Stored In.NET Cache Object?

Nov 2, 2010

I need to enable caching in my asp.net application, but I do not want to use the webserver's memory for holding cache objects. If I add the page directive for output caching will the page be stored in the asp.net cache object?

View 2 Replies

C# - Application_End() Cannot Access Cache Through HttpContext.Current.Cache

Dec 12, 2010

I want to be able to maintain certain objects between application restarts.

To do that, I want to write specific cached items out to disk in Global.asax Application_End() function and re-load them back on Application_Start().

I currently have a cache helper class, which uses the following method to return the cached value:

return HttpContext.Current.Cache[key];

Problem: during Application_End(), HttpContext.Current is null since there is no web request (it's an automated cleanup procedure) - therefore, I cannot access .Cache[] to retrieve any of the items to save to disk.

Question: how can I access the cache items during Application_End()?

View 4 Replies

Sql - Cache And Output Cache For Controls?

Oct 28, 2010

You know I have the way to Cache the data I've got from the SQL Server over data caching. In addition I can output cache web user controls.Whats about a web user control contains data from a SQL database? Does it make sense to cache the data and also cache the control?What is the best solution for the combination of these two components?

View 1 Replies

Custom Server Controls :: How To Programmatically Cache A Server Control And Add A Cache Dependency?

Feb 11, 2011

I have a server control that I developed which generates navigation based on a third party CMS API. Currently I am caching this control using the PartialCaching attribute. The CMS uses cache key dependencies to invalidate the cache when a user makes an edit, however in the case of my server control it does not get invalidated and the updated navigation will not show up until the cache expiration set by the PartialCaching attribute.Here is my two part question:

What is the proper way to programmatically cache a server control, without using the PartialCaching attribute, and adding a cache key dependency?

Is it possible to continue to use the PartialCaching attribute and add a cache key dependency?

View 2 Replies

.net - Get Cache In KB Used For This Application?

Jun 10, 2010

I need to know what is Cache size. I've read solution on this site for more or less similar question but it partly serves me. As i know i can get values from PerMon, here is function

public static string getCacheSize()
{
PerformanceCounter pc = new PerformanceCounter("ASP.NET Applications", "Cache % Machine Memory Limit Used","__TOTAL__", true);
return string.Format("{0:0.00}%", pc.NextValue());
}

1.it gives me percents when i need KB and there is no item closest to this one in PerfMon
2.it shows 70.5% used while all memory usage is about 50%

View 1 Replies

Is It Possible To Manipulate An .net Web Application Cache From Outside The Web

Feb 12, 2010

have a situation very similar to the one in this question:http://stackoverflow.com/questions/774695/selective-cache-clearing-across-load-balanced-servers-asp-netThe difference is that due to our hosting configuration, I am unable to address individual servers by IP address. Assuming I cannot access specific servers via web requests, is it possible to access the HttpContext of a web application running on the same machine? I'm thinking I could accomplish this with a windows service that I could address by machine name, or alternately a console application

View 1 Replies

What's The Diff Between Cache And Application

Apr 12, 2010

I just noticed a "Cache" object, when would you use the Cache object to store state data nd when would you use the Application object?

View 1 Replies

Share Cache Between Web Service And Web Application?

Mar 19, 2010

I would like to create a web application that gives an overview of all latests builds of a Team Foundation Server (TFS). The original idea was to simply query the TFS for all these builds and display the results using html. Now the problem is that this is just too slow. It takes around a minute to get the required informtion. I can't inluence this, it is just given. So I came up with the idea of caching. I could cache all results for a certain period of time and then invalidate the cache but as soon as the cache expires someone that uses the application will have to wait again which is not that nice.

The Team Foundation Server is able to notify whenever a new build is available. So basically the idea is that the application could react on that notification. In order to be notified I have to write a web service and register it with the TFS. That worked pretty well so far. The web service is now notified whenever a new build is done. Now I would like to connect my web application to the web service and whenever the web service is notified by the TFS update the cache of the web application. Here starts the problem. How can this be achieved? First I thought that the web service could fire a .NET event and the web application could react on that event but that does not seem to be possible. The next idea was that both the web service and the web application could use the same cache. The web service could then directly update the cache with the build information it receives from the Team Foundation Server but I am not even sure if this works.

Can a web service and a web application share the same cache? The web service doing something like Cache.Add("key", buildInfo) and the web application buildInfo = Cache["key"]. If not what other approach could be used to solve such a scenario?

View 4 Replies

How To Clear Cache When Updating Application

Aug 16, 2012

How do I force a control+F5 (deleting cache) when updating an application? The users will not do this so I need to force this. Can we use some kind of flush method checking version or...?

View 1 Replies

Clear The Application Cache Without Resetting The AppDomain?

Feb 3, 2010

I would like to reset/clear an item in the Cache, but without resetting the application or writing a specialized page just for this. ie, a non-programmatic solution.

View 3 Replies

Clear Cache From Outside Of Application (not Using Source Code)

Mar 16, 2010

I have a asp.net web application and I'm using cache (HttpRuntime.Cache) to save some stuff from db.

I also update db from time to time so that data in db does not match the data in my application's cache.

Is there any way how to clear my application's cache without modifying any source code or republishing the page?

I tried to restart IIS and to clear browsers cache

View 3 Replies

Web Development - How To Share Application Cache Between Two Applications

Oct 27, 2010

I have one website over at utopiapimp.com. The website is used for a popular web based game. Some company internets don't allow the website to be accessed so I opened up another domain at utopiashrimp.com. Same website but a different iss application. Both have same database backends. They also both sit on the same virtual machine. I put my brand new code on shrimp and solve bugs with that code. I host the solid code on pimp. So I can't just forward the shrimp domain to pimp because I need a test bed.

The problem is that they don't share the same application cache. So my question is, can two websites share the same application cache? I really need to figure this out. I would rather not create a webservice and or a handler that one website needs to hit to change the cache on the other application.

View 2 Replies

State Management :: App Settings In Application Cache?

Dec 12, 2010

Is it suitable to store some app settings in Application Cache? I mean settings that might need to be changed frequently...

View 1 Replies

Web Forms :: Cache "OutputCache" - Exclude The "login/register" Control From The Cache?

Nov 10, 2010

I'm using the OutputCache for my pages, and I have a dynamic user control (login/register) . When the user try to sign in, the the control do not change the aspect because I´m using OutputCache. How can I exclude the "login/register" control from the cache?

View 6 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved