# OpenWare OPEX

#Finex Deployment Guide

Finex consists of two daemons

• Finex - high speed matching engine, that consume events from RabbitMQ
• Batcher - daemon, that collect events from Finex and saves them into the DB every second

# Prerequisites

• Peatio deployed and healthy
• RabbitMQ up and running
• Database service up and running

# Deployment

Install Finex with the following command

./bin/opex app install finex

Go to MySQL and create an event of account balances recalculation.

CREATE EVENT compact_and_recalculate
ON SCHEDULE
    EVERY 1 SECOND
COMMENT 'Compact and recalculate every second'
DO
    CALL compactor();

# Maintenance

Orders created by peatio in period of inactivity, will be stored in DB with pending state.

To safely restart Finex, follow these steps:

• Stop finex daemon
• Wait for few seconds to save everything in the DB
• Stop batcher daemon
• Start batcher
• Start finex

At this stage all events will be purged from RabbitMQ, exchanged and loaded from the database. This may take a while!