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Non Spring Developers Let us assume for a second that you are not a Spring developer and not familiar with Spring Integration which already provides abstractions for ROME. In that case, we can certainly use ROME directly to produce feed records. For example, this is a valid Supplier for this scenario. public Supplier<SyndEntry> feedSupplier() { return () -> { //Use the ROME framework directly to produce syndicated entries. } } The benefit here is that we can develop the supplier without any knowledge of Spring, and it can be deployed to a serverless environment directly, using the abstractions provided by that environment or by relying on a framework like Spring Cloud Function. This essentially means that if you are a Java developer without much Spring Framework skills, you can still write the functions using just the interfaces defined in the java.util.function package such as Function, Supplier and Consumer, by providing the business logic.  Spring Developers Add ...

That lead to the creation of the parsed PathPattern matched against the parsed PathContainer representing the URL path. Patterns are parsed on startup and re-used at runtime for efficient URL matching. How much more efficient? It’s hard to give numbers without a concrete use case but our jmh benchmark shows 6-8 times the throughput and 30-40% reduction in allocation rate. You can tailor the benchmark to get numbers that are more accurate for your application. PathPattern is compatible with AntPathMatcher syntax except for the following: Support for additional syntax to match and capture 0 or more path segments at the end, e.g. "{*spring}". This is useful as a catch-all pattern in REST APIs with access to the captured path segments through a @PathVariable. Support for "**" for multi-segment matching is only allowed at the end of a pattern. This helps to eliminate most causes of ambiguity when choosing the closest match for a given request. PathContainer h...

The recent Spring Framework 5.3 M1 release announcement mentions “Spring MVC comes with PathPattern parsing for efficient URL matching”. This post expands on that with more context and detail. Overview In Spring applications AntPathMatcher is used to identify classpath, file system, remote, and other resources in Spring configuration. It has also been used in Spring MVC to match URL paths. Over time the use of patterns in web applications grew in number and syntax with AntPathMatcher evolving to meet those needs but some pain points remain without a solution: In web applications, patterns need to be matched many times per request and therefore any gains in performance and efficiency matter. However String pattern matching limits what can be achieved. Choosing the most specific pattern among several that match a request has proven challenging over the years with no simple ways to make it more predictable without impacting other cases. Matching a String path to a String patter...