Galaxy developers

One of the cases where using async/await does not improve performance. This is an issue in EF Core that has been open for about four years now. Saeed explains it beautifully, clearly, and simply in this video (overall, Saeed is a pride for us .NET developers, and he has a very deep knowledge; I personally have learned a lot from him).

www.youtube.com/watch?v=Wet1EHDNSiQ&t=942s


- Galaxy - < #NET >

🌿 How does the vm module work for creating isolated contexts in Node.js?

The vm module in Node.js allows you to create isolated execution contexts for JavaScript code. This is useful when you need to safely execute third-party code, ensuring it runs in a sandbox without access to the main application.

- In this example, we use the vm module to execute third-party code in an isolated context:

const vm = require('vm');

// Code that we want to execute in an isolated context
const code = 'let x = 10; x += 5; x';

// Create a new context
const context = {};

// Execute the code in the new context
vm.createContext(context);
const result = vm.runInContext(code, context);

console.log('Execution result:', result); // 15
console.log('Context after execution:', context); // { x: 15 }

- Using vm is useful for executing unfamiliar or potentially dangerous code, as it isolates the code execution from the rest of the application.

@Galaxy_Deve - #JS

لیک یه قسمت دیتابیس نخبگان استان فارس و دانشگاه علوم پزشکی چندتاه دیگه هم هست فعلا بفرما تستر
partial database leak farse provinces elite institute and Farse provinces university of medical for science , just a little tease
محتوا: شناسنامه ، کارت ملی ، عکس شخصی ، مدارک تحصیلی، مدارک حکومتی
Content: national identification, passport, governmental credential , academic credentials

#Data

Checking Json Schema in .NET

It is often useful to validate JSON documents against a schema. A JSON schema is a dictionary that can be used for annotating and validating JSON documents. For example, you can validate a JSON document received from a REST API or a user-written configuration file. Today let's see how to validate JSON data against a schema in .NET.

💡 In PowerShell, you can use the Test-Json cmdlet to validate JSON data against a JSON schema.

.NET does not natively support JSON schema validation. However, there are several third-party libraries that can be used for validating JSON data against a schema. Here we use the JsonSchema.Net library at https://www.nuget.org/packages/JsonSchema.Net.

Let's create a project:
dotnet new console
dotnet add package JsonSchema.Net

The following code demonstrates how to validate JSON data against a schema:

using System.Text.Json.Nodes;
using Json.Schema;


var schema = @"
{
  ""$schema"": ""https://json-schema.org/draft/2020-12/schema"",
  ""$id"": ""https://example.com/product.schema.json"",
  ""title"": ""Product"",
  ""description"": ""A product from Acme's catalog"",
  ""type"": ""object"",
  ""properties"": {
    ""productName"": {
      ""description"": ""Name of the product"",
      ""type"": ""string""
    },
    ""price"": {
      ""description"": ""The price of the product"",
      ""type"": ""number"",
      ""exclusiveMinimum"": 0
    }
  },
  ""required"": [ ""productName"", ""price"" ]
}
";


var json = @"
{
  ""productName"": ""test"",
  ""price"": -1
}
";


var jsonSchema = JsonSchema.FromText(schema);
var result = jsonSchema.Evaluate(JsonNode.Parse(json));

if (!result.IsValid)
{
  Console.WriteLine("Invalid document");
  if (result.HasErrors)
  {
    foreach (var error in result.Errors)
      Console.WriteLine(error.Key + " : " + error.Value);
  }
}

- Galaxy - < #NET >

Podinfo 🌿

A Go microservice template for Kubernetes. This is a small Go-based application that demonstrates best practices for running microservices in Kubernetes, including health checks, graceful shutdown, and more.

github.com/stefanprodan/podinfo


@Galaxy_Deve - #DevOps

List of channel contents:

Podcast: #padcast
Database: #Data

Group JavaScript: #JS
Group Go: #GO
Group DevOps: #DevOps
Group C#: #NET - #CS

Channel created