Backend Development
Open Source

C++ SQLite RESTful Library API

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C++cpp-httplibSQLite3 C APInlohmann/json

A high-performance, statically compiled REST API built in C++ to manage library transactions, leveraging the SQLite3 C API for direct memory-to-disk persistence.

Tech Stack

C++cpp-httplibSQLite3 C APInlohmann/json

System Metrics

▹Zero-overhead HTTP multiplexing and JSON parsing achieved by compiling directly to native machine code
▹Eliminates ORM abstraction penalties by managing database cursors and statement lifecycles directly via C-level raw pointers

Why Did I Build This?

"I needed a lightweight, dependency-free backend to handle relational data without the inherent memory overhead and GC pauses of frameworks like Spring Boot or Node.js. This project demonstrates how to build a highly concurrent REST architecture in raw C++ by directly orchestrating HTTP multiplexing, JSON serialization, and deterministic SQL execution entirely at the memory level."

Architecture & Decisions

The application relies on `cpp-httplib` to bind a multithreaded HTTP listener to OS network interfaces. Incoming payloads are deserialized via `nlohmann/json` into strictly typed C++ domain objects (`User`, `Book`). To guarantee memory safety and absolute immunity to SQL injection, all database operations strictly bypass raw query execution; instead, they utilize the SQLite C-level prepared statement lifecycle (`sqlite3_prepare_v2`, `sqlite3_bind_*`, `sqlite3_step`, and `sqlite3_finalize`) using raw pointers.

Key Features

  • 01.Multithreaded RESTful endpoints managing CRUD operations for relational library entities
  • 02.Strictly parameterized SQLite C API integration preventing malicious SQL injection payloads
  • 03.In-memory JSON deserialization mapping directly to C++ Object-Oriented domain models
  • 04.Autonomous HTTP routing and server execution utilizing header-only C++ network bindings