A Developer's Diary: {name: 'Arun Prasher'}

Prerequisite: PostgreSQL Version This guide assumes you are using PostgreSQL version 14 or later, which supports the necessary commands for PostGIS installation and management. Ensure your PostgreSQL server is up-to-date before proceeding. This guide ensures that PostGIS is installed and configured properly for a specific user, such as administrator , while avoiding common issues. 1. Ensure Superuser Access sudo -i -u postgres psql --dbname=financethat 2. Create a Role for PostGIS Management CREATE ROLE administrator WITH LOGIN PASSWORD 'your_secure_password'; GRANT ALL PRIVILEGES ON DATABASE financethat TO administrator; 3. Install PostGIS To install PostGIS on Ubuntu, first ensure you have the required PostgreSQL version installed. Then, use the following commands: sudo apt update sudo apt install postgis postgresql-14-postgis-3 Replace 14 with your PostgreSQL version if different. After installation, enable PostGIS in...

Implementing Throttling in Django REST Framework to Manage High Traffic and Prevent Abuse Introduction In high-traffic applications, it’s essential to protect server resources and ensure fair usage among users. Throttling is a method used in Django REST Framework (DRF) to limit the rate of requests, helping prevent abuse and manage load. In this article, we’ll explore how to implement throttling in DRF, including ways to apply it to specific views and dynamically whitelist IPs. What is Throttling? Throttling controls the rate of requests an API endpoint can receive from a single client. It’s a valuable tool for: Preventing abuse by limiting request rates for each user or IP address. Managing server load by avoiding high request volumes that can overwhelm the application. In Django REST Framework, throttling is easy to configure with built-in classes like UserRateThrottl...

As web applications grow, handling a high volume of concurrent requests becomes essential. Traditional Django views, which are synchronous, can slow down the system by tying up resources for each request. Fortunately, starting with Django 3.1, asynchronous views were introduced. By leveraging async views, Django can serve more requests concurrently, improving scalability and responsiveness. Understanding Asynchronous Views in Django Asynchronous views allow Django to handle tasks that involve waiting, like database queries or API calls, without blocking threads. This approach allows the server to handle additional requests in the meantime. In Django, async views use the async and await keywords to enable non-blocking behavior. Example: Fetching Data from an External API Here’s an example of an asynchronous view in Django that fetches weather data from an external API. Instead of blocking while waiting for the API response, Django can handle oth...

In Python, lists, dictionaries, and tuples are all built-in data structures that store collections of items. While they share similarities, each has its distinct characteristics and use cases. This post provides a comprehensive comparison. Comparison Table Aspect List Dictionary Tuple Definition An ordered collection of elements. A collection of key-value pairs. An ordered and immutable collection of elements. Access Method Index-based access ( my_list[0] ). Key-based access ( my_dict['key'] ). Index-based access ( my_tuple[0] ). Mutability Mutable: Elements can be added, removed, or changed. Mutable (for values): Keys/values can be added, modified, or removed, but keys must be immutable. Immutable: Elements cannot be changed once assigned. Order Guarantee Maintains th...

Introduction Integrating Firebase App Check with Firestore enhances your app's security by ensuring that only legitimate app instances can access your backend resources. However, developers often encounter the "Missing or insufficient permissions" error when setting up App Check with Firestore. This error typically indicates issues with initialization order, configuration, or security rules. In this blog post, we'll explore the common causes of this error and provide a step-by-step guide to troubleshoot and resolve it, ensuring your app interacts securely and seamlessly with Firestore. Understanding Firebase App Check and Firestore Security Rules Firebase App Check helps protect your backend resources from abuse by verifying that incoming traffic comes from your app. It does this by attaching an App Check token to each request. Firestore Security Rules use these tokens to determine whether a request should be allowed. Specifically, the rule allow read, ...

Migrations in Django are essential for managing changes to your database schema over time. However, during development or when migrations become too cumbersome, you might need to reset them entirely. This guide will walk you through the process of resetting all migrations in a Django project, ensuring a clean slate for your database schema. Table of Contents Why Reset Migrations? Prerequisites Step-by-Step Reset Guide Backup Your Database Identify Affected Apps Delete Migration Files Reset Migrations to Zero Recreate Initial Migrations Apply Migrations Thoroughly Test Your Application Understanding Django Migration Commands Handling Manual Schema Changes Conclusion Why Reset Migrations? Over time, as a project evolves, the number of migration files can grow significantly. This can make it challenging to manage migrations, especially if: You've made substantial changes to your models. Mi...