Asynchronous ORM

Features

• QuerySet
• creates tables from models

Technologies

• asyncio
• PostgreSQL

Asynchronous Web Crawler

Features

• asynchronous
• search Rest API
• throttling (by domain)

Technologies

• asyncio
• aiohttp
• ElasticSearch

Distributed Web Crawler

Features

• asynchronous
• search Rest API
• throttling (by domain)
• distributed
• auth by token

Technologies

• asyncio
• aiohttp
• ElasticSearch (pages storage)
• RabbitMQ broker (rpc)
• PosgreSQL (users, tokens and stats)

Matrix C module

C extension matrix implementation, 3x times faster than Python implementation.

Operations

• sum of matrices
• multiplication by matrix, by integer
• division by integer
• transpose
• in operator

ORM

Features:

• QuerySet
• creates tables from models

Technologies

• SQLite

QR Code Bot

Generates QR codes and sends them to VK user

Technologies

• multiprocessing
• VK API