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Featured Assignments
GoLang-based Web Scraper
Web Scraping with GoLangClient Requirements
The student needed to build a web scraper using GoLang that could extract specific data from multiple websites (such as product information or job listings) and store it in a CSV file. The scraper needed to handle multiple pages, follow links, and manage errors if any pages were unreachable.
Challenges Faced
We ensured the scraper was efficient and could handle multiple concurrent requests. However, the student faced challenges with handling rate-limiting mechanisms on websites and ensuring the correct data was extracted without errors or missing fields.
Our Solution
We used the GoLang net/http package to make HTTP requests and the golang.org/x/net/html package to parse the HTML responses. To handle concurrent requests, Go routines were implemented, and error handling was added to manage failed HTTP requests. The extracted data was written to a CSV file using the encoding/csv package.
Results Achieved
The scraper successfully extracted data from multiple websites, handled rate limits by introducing delays between requests, and stored the information correctly in a CSV format. It was able to navigate through multiple pages and extract the necessary details without issue.
Client Review
I had a rewarding experience working on this assignment! The GoLang web scraper I developed worked as expected and handled multiple pages efficiently. I learned a lot about Go routines and error handling. The result was perfect, and I’m really satisfied with how the scraper handled rate limits and extraction.
GoLang-based REST API with Database Integration
REST API Development with GoLangClient Requirements
The student needed to create a REST API in GoLang that interacted with a MySQL database. The API should allow users to perform CRUD (Create, Read, Update, Delete) operations on user data, including name, email, and password, with proper authentication and validation.
Challenges Faced
We ensured the API was scalable and secure. The student faced complications in integrating the MySQL database using Go’s database/sql package, especially with managing prepared statements and handling database connections efficiently.
Our Solution
We used Go’s net/http package to create the API endpoints and github.com/go-sql-driver/mysql to interact with the MySQL database. JWT-based authentication was implemented for secure access, and proper validation of user data was carried out. We used prepared statements to prevent SQL injection and ensure efficient querying.
Results Achieved
The REST API was functional, allowing users to register, update, and delete their profiles securely. The database interaction was smooth, with data being stored and retrieved efficiently. JWT authentication provided secure user access.
Client Review
Working on this API project was an amazing experience! I gained a solid understanding of GoLang’s web frameworks and database integration. The API worked seamlessly with MySQL, and implementing JWT authentication was an eye-opener. I am really proud of how the project turned out and how secure it is.
GoLang-based Concurrent File Downloader
Concurrency and File Handling in GoLangClient Requirements
The student needed to develop a file downloader using GoLang that could download multiple files concurrently. The downloader should be able to handle different file types and resume downloads in case of an interruption. The student wanted to demonstrate their ability to use concurrency features in GoLang.
Challenges Faced
We ensured the program handled concurrent downloads without crashing the system or running out of memory. The student faced complications managing the download status, especially when a file needed to be resumed after a pause or failure.
Our Solution
We implemented the downloader using Go routines for concurrent downloads. The net/http package was used to fetch the files, and the os package was used to manage file writes. We introduced a mechanism to track the download progress and resume interrupted downloads by checking the file’s size and sending a range request to the server.
Results Achieved
The downloader successfully downloaded multiple files concurrently, efficiently managing memory and system resources. It also had the capability to resume downloads, making it a reliable tool for large files.
Client Review
Developing this file downloader was a great challenge that helped me understand GoLang’s concurrency model. I learned how to manage resources and track progress effectively, and the ability to resume downloads was a key feature that worked perfectly. I’m thrilled with how the project turned out.
GoLang-based Real-Time Chat Application
Real-Time Applications with GoLangClient Requirements
The student needed to create a real-time chat application using GoLang where users could send messages to each other in real time. The chat application needed to support multiple rooms, and users should be able to join, leave, and send messages to different rooms.
Challenges Faced
We ensured that the application handled multiple concurrent users efficiently, but faced challenges in managing WebSocket connections and ensuring messages were broadcasted to all connected clients. The student also struggled with ensuring the system scaled properly to handle a large number of users.
Our Solution
We implemented the chat application using WebSockets, leveraging the gorilla/websocket package. Each chat room was represented as a Go routine, and messages were broadcasted to all connected clients using channels. We also implemented connection management to handle user joins, leaves, and disconnects.
Results Achieved
The real-time chat application was fully functional, with multiple chat rooms where users could send and receive messages in real time. It efficiently handled multiple connections and broadcasted messages to all users in a room.
Client Review
Creating this real-time chat application in GoLang was a great learning experience. I got hands-on experience with WebSockets and concurrency in Go. The application worked smoothly, and I’m happy with how it scaled to handle multiple users. It was one of the most satisfying projects I’ve worked on.