A pet project to compare different data processing Based on MongoDB change stream features Host Ubuntu 20.04 MongoDb - cluster of 3 nodes (replica set) Add to /etc/hosts 172.20.128.1 mongo_1 172.20.128.2 mongo_2 172.20.128.3 mongo_3 Setup Batch processing Python: process data at level mongodb deployment Change stream Golang: process data at level document