Client id
A client ID is an identifier that distinguishes an application or client to a system, such as an authentication provider or messaging service.
Spring Security in Action, Second Edition
A client identifier is an externally visible value that uniquely identifies an OAuth client to an authorization server.
- How it is used
- Identifies OAuth clients during provider registration, login configuration, token requests, and token introspection.
- How deep it goes
- Defines the identifier and contrasts it with internal IDs and secrets, then applies it in Spring configuration and client registration.
- Examples
- Uses Google and GitHub application properties, Spring RegisteredClient definitions, and resource-server introspection settings.
- What you can do after
- Configure OAuth clients with provider-issued identifiers and distinguish client identification from authentication secrets.
Read how Spring Security in Action, Second Edition explains client id →
Secure APIs
An identifier that distinguishes an OAuth client application to an authorization server.
- How it is used
- Identifies an OAuth client application during authorization requests and token exchanges.
- How deep it goes
- Explains the identifier’s role in authorization URLs, authorization-code binding, token exchange, and device-flow polling.
- Examples
- Uses a job portal’s LinkedIn authorization URL and a smart TV’s device authorization request as concrete examples.
- What you can do after
- Operate/configure OAuth authorization requests by supplying the registered client ID and distinguishing it from the client secret.
Related concepts
- application propertiesconfigured by · Application properties are named configuration settings that provide values used to configure an application's behavior.
- resource limitconfigures · A resource limit is an enforced or configured maximum on the amount or rate of resource consumption or service activity within a specified scope.
- monitoringuses · Monitoring is the ongoing observation and measurement of a system’s behavior, state, or operational signals to assess its condition and detect changes or problems.
- clientused by · A client is a person, organization, device, or software component that receives or uses a product, service, resource, or functionality provided by another entity.
- configurationpart of · A specification of settings, parameters, or component relationships that determines how a system, application, model, or process is structured or operates.
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