{"id":71574,"library":"spring-cloud-sleuth-core","title":"Spring Cloud Sleuth Core","description":"Core library for distributed tracing in Spring Cloud applications.","status":"active","version":"2.2.8.RELEASE","language":"java","source_language":null,"source_url":"https://github.com/spring-cloud/spring-cloud-sleuth","tags":["spring","cloud","tracing","sleuth","observability"],"install":[{"cmd":"<dependency>\n  <groupId>org.springframework.cloud</groupId>\n  <artifactId>spring-cloud-sleuth-core</artifactId>\n  <version>2.2.8.RELEASE</version>\n</dependency>","lang":"xml","label":"Maven"},{"cmd":"implementation 'org.springframework.cloud:spring-cloud-sleuth-core:2.2.8.RELEASE'","lang":"groovy","label":"Gradle"}],"dependencies":[],"imports":[{"symbol":"Tracer","correct":"org.springframework.cloud.sleuth.Tracer"}],"quickstart":{"code":"import org.springframework.cloud.sleuth.Tracer;\nimport org.springframework.beans.factory.annotation.Autowired;\n\n@Service\npublic class MyService {\n    @Autowired\n    private Tracer tracer;\n    \n    public void doWork() {\n        tracer.currentSpan().tag(\"key\", \"value\");\n    }\n}","lang":"java","description":"Inject and use the Sleuth Tracer to add custom tags to spans."},"warnings":[{"fix":"Migrate to Micrometer Tracing for future compatibility.","message":"Spring Cloud Sleuth is deprecated in favor of Micrometer Tracing.","severity":"breaking","affected_versions":">=3.0.0"}],"env_vars":null,"search_vec":"'applic':13 'cloud':2,12,15 'core':4,5 'distribut':8 'librari':6 'observ':18 'sleuth':3,17 'spring':1,11,14 'trace':9,16","created_at":"2026-06-17T18:28:48.956792+00:00","updated_at":"2026-06-17T18:28:48.956792+00:00","problems":[],"ecosystem":"maven","meta_description":null,"install_score":null,"quickstart_score":null,"quickstart_tag":null,"pypi_latest":null,"cli_name":null,"cli_version":null,"type":"library","homepage":"https://spring.io/spring-cloud","github":"https://github.com/spring-cloud/spring-cloud-sleuth","docs":"https://appdoc.app/artifact/org.springframework.cloud/spring-cloud-sleuth-core/","changelog":null,"pypi":null,"npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"categories":["observability"],"base_url":null,"auth_type":null,"provenance":{"verified_status":null,"verified_at":null,"last_verified":"2026-06-17","next_check":"2026-12-14","install_tag":null}}