@medishn/gland-qiu

@medishn/gland-qiu is a flexible and efficient database management tool that handles multiple SQL databases with powerful caching, rate-limiting, and task management functionalities for database operations.

Features

• Multi-database Support: Supports various SQL databases through a flexible configuration.
• Rate Limiting: Ensures controlled execution of tasks with custom rate-limits.
• Task Management: Queue-based task execution system for managing multiple queries.
• Cache Management: In-memory caching system to reuse frequently used commands and reduce overhead.
• File-based Query Execution: Supports SQL queries from .sql files.

Installation

Install the package using npm:

1npm install @medishn/gland-qiu

Getting Started

Below is an example of how to use the Qiu class to run database queries:

Initialization

To begin using Qiu, you need to initialize it with your database type and connection string.

1import { Qiu } from "@medishn/gland-qiu";
2
3const db = new Qiu({
4  type: "postgresql",
5  connect: "psql -U postgres -d postgres -h localhost -p 5432",
6});

You can also specify MySQL or MariaDB:

1const db = new Qiu({
2  type: "mysql",
3  connect: "mysql://username:password@localhost:3306/mydatabase",
4});

Execute a Query

Simple Query

To execute a simple SQL query, use the exec method.

1await db.exec("SELECT * FROM users;");

File-based Query

You can also run SQL queries stored in .sql files:

1await db.exec("queries/init.sql", { isFile: true });

Get Output from the Query

If you want the result of the query, set the value option to true.

1const result = await db.exec("SELECT * FROM users;", { value: true });
2console.log(result);

API Reference

Qiu

constructor(config: { connect: string, type: DatabaseSqlType })

• config: An object containing:
  • connect: The connection string or URI of the database.
  • type: The type of database.

exec(query: string, options?: { value?: boolean, isFile?: boolean }): Promise<void | string>

• query: The SQL query string or path to the .sql file.
• options: (Optional) If value is set to true, the result of the query will be returned. If isFile is set to true, the query will be treated as a file path.

Example

1import { Qiu } from "@medishn/gland-qiu";
2
3const db = new Qiu({
4  type: "postgresql",
5  connect: "psql -U postgres -d test_qiu -h localhost -p 5432",
6});
7
8await db.exec("init.sql", { isFile: true });
9const result = await db.exec("SELECT * FROM users;", { value: true });
10console.log(result);

Contributing

Contributions are welcome! Please see the CONTRIBUTING.md file for more information.

Changelog

Details about the latest changes are documented in CHANGELOG.md.

Security

If you find any security-related issues, please report them to bitsgenix@gmail.com.

License

This project is licensed under the MIT License. See the LICENSE file for details.