IM (InstantMessaging) is a real-time communication service that allows users to create a private chatroom on the Internet.
There are four major categories of NoSQL (non-relational database) databases: key-value storage databases, column storage databases, document databases, and graph databases.
SOA (Service Oriented Architecture) Service-Oriented Architecture
SSO (Single Sign On) single sign-on, SSO is in multiple application systems, users only need to log in once to access all mutually trusted application systems.
WSDL Web Service Description Language (WSDL) is a language for describing services, and it has a set of XML-based syntax definitions. The focus of WSDL description is service, which contains service implementation definition and service interface definition.
SOAP Simple Object Access Protocol (SOAP) defines the message transfer specification between service requesters and service providers. SOAP uses XML to format messages and HTTP to carry messages.
CMS is the abbreviation of Content Management System, which means "Content Management System".
RPC (Remote Procedure Call Protocol) - Remote Procedure Call Protocol.
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JSR is the abbreviation of Java Specification Requests, which means Java specification proposal.