Post Viewer and Analyzer with Go

Introduction

The Post Viewer and Analyzer is a very simple web-based application built with Go. It serves a web interface that allows users to fetch posts from the JSONPlaceholder API, save these posts to a file, and perform a character frequency analysis on the saved data. This application demonstrates the use of Go for server-side web development, including handling HTTP requests, processing JSON, and rendering HTML templates.

Features

• Fetch Data: Users can fetch posts from the external JSONPlaceholder API.
• Save Data: Automatically saves fetched posts into a local JSON file.
• Analyze Data: Performs a character frequency analysis on the contents of the saved JSON file.
• Web Interface: Simple and user-friendly web interface to interact with the application.

Live Deployment

The application is deployed on Render and can be accessed using the following link: Post Viewer and Analyzer

Please note that the application is hosted on a free tier and may take some time to load initially.

Technology Stack

• Go: All server-side logic is implemented in Go, utilizing its standard library for web server functionality, file I/O, and concurrency.
• HTML/CSS: Front-end layout and styling.
• JSONPlaceholder API: External REST API used for fetching sample post data.

Why Go?

• Concurrency: Go's built-in support for concurrency makes it easy to write efficient and scalable web servers.
• Standard Library: Go's standard library provides robust support for web development, including an HTTP server, JSON encoding/decoding, and file I/O.
• Performance: Go is known for its fast compilation times and efficient runtime performance, making it a great choice for web applications.
• Community: Go has a large and active community, with extensive documentation and libraries available for web development.

Example Analysis Result

Getting Started

Prerequisites

• Go (version 1.14 or higher recommended)
• Internet connection (for fetching data from the external API)
• Web browser (for accessing the application)

Installation

1. Clone the repository:

   git clone https://github.com/hoangsonww/Post-Analyzer-Webserver.git
   cd Post-Analyzer-Webserver
   

2. Run the application:

   go run main.go
   

Usage

1. Run the application using the steps mentioned above, do not forget to run go run main.go!
2. Open your web browser.
3. Navigate to http://localhost:8080/ to access the application.
4. Use the following endpoints to interact with the application:
   • Home Page: /
   • Fetch Posts: /fetch - Fetches posts from the JSONPlaceholder and saves them to a local file.
   • Analyze Character Frequency: /analyze - Analyzes the frequency of each character in the saved posts.
   • Add Post: /add - Adds a new post to the saved posts.
5. Because it is currently a Backend-focus application, you can greatly enhanced it by adding a polished Frontend to it, such as by using React.js.

Application Structure

• main.go: Contains all the server-side logic including API calls, concurrency handling, file operations, and web server setup.
• home.html: HTML template file used for rendering the web interface.
• go.mod: Go module file that defines the project's dependencies.
• posts.json: Local JSON file used to store the fetched posts.

Contributing

Contributions are what make the open-source community such an amazing place to learn, inspire, and create. Any contributions you make are greatly appreciated.

1. Fork the Project
2. Create your Feature Branch (git checkout -b feature/AmazingFeature)
3. Commit your Changes (git commit -m 'Add some AmazingFeature')
4. Push to the Branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

License

Distributed under the MIT License. See LICENSE for more information.

Contact

Son Nguyen - https://github.com/hoangsonww

Acknowledgements

• Go
• JSONPlaceholder

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Created with ❤️ by Son Nguyen in 2024.