Rocio  O'Keefe

Rocio O'Keefe


UI Notifications System With Blazor, SignalR and OpenSleigh

In this article, we are going to discuss a step-by-step tutorial on how we can write a real-time UI notifications system using Blazor, Signal, and OpenSleigh.


Hi, all! Today we’re going to see how we can write a real-time UI notification system. We will use **Blazor **to render the UI, **SignalR **to handle the client/server communication, and OpenSleighto execute the background operations.

Our goal is to allow the user to trigger the execution of a long-running operation. The gruntwork might be composed of multiple steps and has to be performed in the background, without blocking the UI.

However, we also want to inform the user of the current status, by sending notifications as soon as an event occurs.

A practical example could be the Azure Portal: the user performs any operation, like creating an Application Service. The operation is performed in the backend, and the Portal will show a status notification on the top right when it’s done.

Our application will, of course, be much simpler than the Azure Portal, but the basic idea remains the same:

OpenSleigh gif

#microservice #blazor

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UI Notifications System With Blazor, SignalR and OpenSleigh

Blazor reusable UI components

#Blazor #Blazor tutorial #Blazor c# #Blazor core mvc #Blazor reuseable ui

Ruth  Nabimanya

Ruth Nabimanya


System Databases in SQL Server


In SSMS, we many of may noticed System Databases under the Database Folder. But how many of us knows its purpose?. In this article lets discuss about the System Databases in SQL Server.

System Database

Fig. 1 System Databases

There are five system databases, these databases are created while installing SQL Server.

  • Master
  • Model
  • MSDB
  • Tempdb
  • Resource
  • This database contains all the System level Information in SQL Server. The Information in form of Meta data.
  • Because of this master database, we are able to access the SQL Server (On premise SQL Server)
  • This database is used as a template for new databases.
  • Whenever a new database is created, initially a copy of model database is what created as new database.
  • This database is where a service called SQL Server Agent stores its data.
  • SQL server Agent is in charge of automation, which includes entities such as jobs, schedules, and alerts.
  • The Tempdb is where SQL Server stores temporary data such as work tables, sort space, row versioning information and etc.
  • User can create their own version of temporary tables and those are stored in Tempdb.
  • But this database is destroyed and recreated every time when we restart the instance of SQL Server.
  • The resource database is a hidden, read only database that holds the definitions of all system objects.
  • When we query system object in a database, they appear to reside in the sys schema of the local database, but in actually their definitions reside in the resource db.

#sql server #master system database #model system database #msdb system database #sql server system databases #ssms #system database #system databases in sql server #tempdb system database

CRUD App Using Blazor And Entity Framework Core in ASP.NET Core

#blazor #blazor in c# #blazor tutorial #blazor webassembly #blazor crud #blazor with core

CRUD App Using Blazor And Entity Framework Core in ASP.NET Core

#blazor #blazor tutorial #blazor crud #blazor api #blazor with core #blazor in c#

CRUD App Using Blazor And Entity Framework Core in ASP.NET Core

#blazor #blazor tutorial #blazor in c# #blazor crud #blazor webassembly #blazor with core