The -v flag in Docker is used to specify a volume to mount into a Docker container. A volume in Docker is a way to share data between a container and the host machine, or between containers. This allows you to persist data, share files, or communicate between containers. The basic syntax for using the…
Tutorials
Running RabbitMQ on Docker
Running RabbitMQ on Docker is a straightforward process. Docker allows you to easily create and run containers, and RabbitMQ provides an official Docker image that makes it even simpler to set up. Here are the steps to run RabbitMQ on Docker: This command downloads the latest version of the RabbitMQ image. Explanation of the command:…
execute permission on a file
You can set the execute permission on a file in a Unix-like operating system, such as Linux or macOS, using the chmod command. Here’s how you can do it: Replace filename with the name of the file for which you want to set the execute permission. For example, if you have a file named “my_script.sh”…
Creating a custom user model in Django
Creating a custom user model in Django using AbstractBaseUser is a common practice when building Django Rest Framework (DRF) applications. This approach allows you to have full control over the user model and tailor it to your project’s specific needs. Here are some best practices for creating a custom user model with AbstractBaseUser in DRF:…
Django and InfluxDB to save sensor data
Using Django and InfluxDB to save sensor data is a powerful combination, as InfluxDB is a time-series database that’s well-suited for storing and querying time-series data like sensor readings. Here’s a step-by-step guide on how to set up Django to save sensor data into InfluxDB: Replace ‘your-influxdb-token’, ‘your-influxdb-organization’, and ‘your-influxdb-bucket’ with your InfluxDB credentials and…
Django. JWT (JSON Web Tokens)
Django Rest Framework (DRF) is a powerful toolkit for building Web APIs in Django. JWT (JSON Web Tokens) is a popular authentication method for securing RESTful APIs. Here, I’ll provide you with an example of how to implement JWT authentication in a Django Rest Framework project. First, make sure you have Django and Django Rest…
IoT data storage
Choosing a database for storing data from IoT devices depends on various factors, including the nature of your data, scalability requirements, query patterns, and your team’s familiarity with certain technologies. Here are a few database options that are commonly considered for IoT data storage: The choice of database depends on your specific use case, including…
large-scale web application roadmap
Creating a large-scale web application with video, voice, and text message features using Django (a Python web framework) is an ambitious goal. Here’s an extended roadmap of what you should learn: Creating a large-scale web application is a significant undertaking, and it requires a deep understanding of various technologies. Consider breaking down the project into…
Connect to a MongoDB container
To connect to a MongoDB container using PyMongo with a URI, you can follow these steps: Replace the placeholders with your actual values. Here’s an example URI: Here’s an example script that puts it all together: Remember to replace “username”, “password”, “localhost”, “27017”, and “mydatabase” with your actual MongoDB container information. Note: Make sure your…
write tests using pytest for a MongoDB
write tests using pytest for a MongoDB user login check, you’ll need to create a sample database, add test data, and then write test cases to check the user login function. Here’s how you can do it: Step 1: Install Required PackagesFirst, make sure you have pytest and mongomock installed. mongomock is a library that…