The Microservices Architecture (MA) for Oracle GoldenGate is a new REST API Microservices-based architecture that allows you to install, configure, monitor, and manage Oracle GoldenGate services using a web-based UI.
Really there are two versions of GoldenGate now: classic and microservice. Classic architecture has standard extract, replicat, pump and receiver. It is managed by classic ggsci. Microservice Architecture (MA) has different types of processes and managed using Admin Client or using web UI. See architecture of GoldenGate MA below
Oracle GoldenGate MA is designed with the industry-standard HTTP communication protocol and JSON data interchange format.
Classic architecture was managed using ggsci console and had weak authentication and authorization tools. Oracle GoldenGate MA has ability to verify identity using basic authentication and using SSL client certificates.
GoldenGate MA processes
Oracle GoldenGate MA uses different types of processes to perform same tasks as GoldenGate Classic. Let’s talk a little bit about new processes:
Service Manager. Something like (and replacement of) Manager process. This is watchdog for other processes.
Administration Server. Something like ggsci console. Operates as central control entity. You use it to create and manage other processes. The key feature of Administration Server is REST API which can be accesses from any HTTP or HTTPS client.
You can add, delete or alter GoldenGate processes, edit configuration files, add users and assign roles using Administration Server.
Receiver Server. Something like collector. It can receive trail files from remote server. However it replaces multiple collectors because it is multithreaded. Receiver was designed to be protocol agnostic – so it supports HTTPS, HTTP, UDT (reliable UDP) and classic GoldenGate TCP transports. By default it uses HTTPS protocol.
Distribution Server. Something like pump. But again this multithreaded process which can handle multiple trail at the same time. So it will replace multiple pumps. And again it supports multiple protocols: WebSockets for HTTPS-based streaming, which relies on SSL security, UDT, SOCKS5, HTTP. It also support Passive mode to initiate connection from remote side.
Performance Metrics Server. This is process which collects and saves information from other processes (extracts, replicats, etc). All GoldenGate processes push information to Performance Metrics Server. Now this is the only processes which writes data to GoldenGate datastore (Berkley DB). You can use Performance Metrics Server to query various metrics, view logs, process statuses, monitor system utilization, etc.
Admin Client. It is a command line utility (similar to ggsci) used to create, configure and manage processes. Admin Client uses REST API to accomplish its tasks.
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