Application Insights(AI) is a park of Azure clous services, that gathers application telemetry data and is able to show it with nice charts. User can also query gathered data to create custom reports. To gather telemetry data user must only enable it in Visual Studio. Detailed instructions can be found here: https://docs.microsoft.com/en-us/azure/application-insights/app-insights-asp-net Creating custom data source… Continue reading Custom data source in Application Insights
Send messages in batch without exceeding a limit
Service Bus allows user to send messages in batches, which is great what it comes to performance. Differences sending messages in batches and separately can be huge. Actually, lets look at an example. This is a very simple send:
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private static void SimpleSendBatch() { var client = GetQueueClient(); client.SendBatch(GetALotOfMessages()); } |
If we compare it to sending messages sequential, we get: So sending 200 messages sequential… Continue reading Send messages in batch without exceeding a limit
Implementing deferral mechanism in ServiceBus
Deferral is a method to leave a message in a queue or subscription when you cannot process it at the moment. When using PeekLock read mode you read a message but leave it in a queue. When processing of a message is done, you call Complete and message is removed from queue, but when something… Continue reading Implementing deferral mechanism in ServiceBus
Receive message from queue in push model
Push and pull models are in general approaches of distributing the data between services. In the context of messaging it mean how messages are received by the client. In the previous post I showed how to receive messages by waiting for them to come – this is pull model. Receive method will wait some amount of time… Continue reading Receive message from queue in push model
Getting messages from Service Bus queue
In the previous post I discussed how to implement sending messages. In this post I will show how to receive messages. The simplest code looks like this:
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static void GetMessage() { try { var queueClient = GetQueueClient(); var message = queueClient.Receive(); Console.WriteLine("Received a message: " + message.GetBody<string>()); } catch (Exception ex) { Console.WriteLine("An exception occured: " + ex.Message); } } private static QueueClient GetQueueClient(ReceiveMode receiveMode = ReceiveMode.ReceiveAndDelete) { const string queueName = "stockchangerequest"; var connectionString = ConfigurationManager.AppSettings["Microsoft.ServiceBus.ConnectionString"]; var queueClient = QueueClient.CreateFromConnectionString(connectionString, queueName, receiveMode); queueClient.RetryPolicy = new RetryExponential(TimeSpan.FromSeconds(5), TimeSpan.FromSeconds(30), 10); return queueClient; } |
Program will now receive a message, parse body as string and output it on console. But messages should be read as they appear, so there need to… Continue reading Getting messages from Service Bus queue
Sending messages to Azure Service Bus queue
To connect to Azure Service Bus you need to import nuget package: WindowsAzure.ServiceBus. Next step would be getting a connection string to your resource group. It can be found in Azure Portal, in Service Bus section. It should look like this: Copy connection string – primary key and paste it in App.config file. A key… Continue reading Sending messages to Azure Service Bus queue
How to prevent ASP.Net api from going to sleep
Web Api is a framework to build HTTP based services, especially RESTful apis. It is designed to build request triggered action, where system will be ready to do some work when receiving a request. If it’s not asked, it shouldn’t do anything and in a while it will go to sleep. Problem starts when you’re planning… Continue reading How to prevent ASP.Net api from going to sleep
Azure Service Bus – introduction
Azure Service Bus is a Microsoft implementation of a messaging system, that works seamlessly in the cloud and does not require to set up a server of any kind. Messaging is a good alternative for communication between micro-services. Let’s compare the two. REST communication contract constrains may be a risk synchronous model be default load… Continue reading Azure Service Bus – introduction
Getting Azure subscription
There are a couple of ways you can get access to Azure services. You might get it from work or with BizSpark program. However, if you want to get it for free, just go to Azure website and start a trial. After couple of minutes of configuration you will have full functional Azure environment with vast… Continue reading Getting Azure subscription