Focused crawls are collections of frequently-updated webcrawl data from narrow (as opposed to broad or wide) web crawls, often focused on a single domain or subdomain.
More advanced samples of spring boot and spring cloud microservices showing usage of such tools like api Swagger2 on Zuul, integraction with MongoDB, configuration server, testing with Spring Cloud Contract or Hoverfly
sample spring boot application illustratig usage of such test frameworks like spring boot test, gatling, spring cloud contract, pact, mockito, hoverfly