...By deployment of the Open-IM-Server on the customer's server, developers can integrate instant messaging and real-time network capabilities into their own applications free of charge and quickly, and ensure the security and privacy of business data. Open-IM relies on five open source high-performance components: ETCD, MySQL, MongoDB, Redis, and Kafka. Privatization deployment Before Open-IM-Server, please make sure that the above five components have been installed. If your server does not have the above components, you must first install Missing components. If you have the above components, it is recommended to use them directly.