SignalR made the real-time web incredibly simple for .NET programmers, but we’re not standing still. Version 1.1 brought improved performance and scale-out support via SQL Server, Redis, and Windows Azure Service Bus. But there’s more to SignalR scale-out than just this. What are the best strategies based on your application type? Version 2.0 continues the…
Continue readingSometimes window service crash due to unhandled exception occur in the code. Which cause service to be on halt without any error log and we are unable to restart or stop the service in the windows. In .net framework 4.5, Microsoft provides a method to handle the exception in the async event handler. Simply write…
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Before answering the question ‘How to identify critical code path?’ let me answer ‘Why identify critical code path?’ Why identify critical code path? There are a couple of answers to it: Performance Optimization Accurate Smoke Test Performance Optimization In most applications, we have observed that less than 5% of application code accounts for more than…
Continue readingUpdate 29th Dec, 2016: If you’re using the latest PIXEL Image, please make sure you enable the SSH Server by placing a a file named as ssh in the boot directory before trying any of the following methods. The SSH Server on boot has been disabled in the latest Raspbian image as a security measure. Read more about…
Continue readingTo get the list of file with permission: ls -l <foldername> To get the list of folder and files present in folder ls <foldername> To get resource status about cpu,memory, storage space free -m To give read write premission on folder chmod -R 777 <folderpath> (for read / write ) where -R is recursively apply…
Continue readingIn Elasticsearch, a document belongs to a type, and those types live inside an index. You can draw some (rough) parallels to a traditional relational database: Relational DB ⇒ Databases ⇒ Tables ⇒ Rows ⇒ Columns Elasticsearch ⇒ Index⇒ Types ⇒ Documents ⇒ Fields Note: In Elasticseach version 6 or more we need to create…
Continue readingPerformance: Repeater > DataList > GridView The GridView Web control provides the greatest feature set of the Rpeater control , with its ability to allow the end-user to sort, page, and edit its data. The GridView is also the simplest data Web control to get started with, as using it requires nothing more than adding…
Continue readingDifferent .net framework version and the features include in each version. Cewmman Language infrastructure IL (Intermediate Language) -> Make the .net language Independent and convert the language into the intermediate language which can be understandable by CLR. CLR (Comman Language Runtime) -> CLR convert the IL into the machine language i.e into the binary language…
Continue readingDifferences between ExecuteNonQuery, ExecuteReader and ExecuteScalar in asp.net If you want to know about each sqlcommand object check below articles ExecuteNonQuery ExecuteNonQuery method will return number of rows effected with INSERT, DELETE or UPDATE operations. Example: protected void btnSubmit_Click(object sender, EventArgs e) { using (SqlConnection con=new SqlConnection(“Data Source=SureshDasari;Integrated Security=true;Initial Catalog=MySampleDB”)) { con.Open(); SqlCommand cmd =…
Continue readingTrick to learn –> “SILVER” Page Life Cycle Stages I general, when a user request a page through his/her browser then page goes through several stage outlined in the following list. In addition to the page life-cycle stages, there are application stages that occur before and after a request but are not specific to a…
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