You need the following steps (old version):

• Be aware (nhận biết, nhận thức) of what SPI you want to customize. There are several (mot so) options like a SPI for User Storage, Theming, Authentication etc. see https://www.keycloak.org/docs/latest/server_development/#_providers for more details.

• For every SPI you need to build a Java Project. Here is an example for a custom UserStorage SPI via HTTP Client https://github.com/adviqo-GmbH/keycloak/compare/master…adviqo-GmbH:feature/http-storage - this is a diff. You need a pom.xml, some java-classes and at least a property under META-INF/services/org.keycloak.storage.UserStorageProviderFactory that contains the reference (tham quyen, giai quyet) to specific (cu the) class

• then you need to build the SPI module with maven/java.

• the result ( here in form of a JAR, but WAR and EAR is possible (kha thi) too) must be placed in **/standalone/deployments.**

• KeyCloak will identify (nhan dang) the new custom SPI during startup.

That it. Of course - it’s not easy and the documentation (*https://www.keycloak.org/docs/latest/server_development/#_providers *) not very helpful for beginners