Spring Loaded
Netty
Spring Loaded | Netty | |
---|---|---|
2 | 53 | |
2,710 | 32,796 | |
0.1% | 0.4% | |
0.0 | 9.6 | |
about 2 years ago | 5 days ago | |
Java | Java | |
Apache License 2.0 | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Spring Loaded
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What blocked you from migrating beyond Java 8?
Hot reloading with spring-loaded doesn't support anything beyond JDK 8. New spring-devtools is much slower.
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Speed boost achievement unlocked on Docker Desktop 4.6 for Mac
When using Java, with say, jib and skaffold, when a change is detected the image is rebuilt with some fairly smart cacheing being done to minimize the build time.
In more interesting setups, the class files aren't in the image but rather mapped in - much the same way one would with dynamic and then a hot reload - https://docs.spring.io/spring-boot/docs/1.3.8.RELEASE/refere...
> Spring Loaded goes a little further in that it can reload class definitions with changes in the method signatures. With some customization it can force an ApplicationContext to refresh itself (but there is no general mechanism to ensure that would be safe for a running application anyway, so it would only ever be a development time trick probably).
And this way, the container can remain the same with the class files being changed underneath it.
https://github.com/spring-projects/spring-loaded
Netty
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Reactor Netty: UDP DNS client example
Code of netty is here and using following library
- Netty: Asynchronous event-driven network application framework
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New scalable, fault-tolerant, and efficient open-source MQTT broker
We use Netty (https://netty.io/) as the source of the MQTT communication, and we build the MQTT features the MQTT broker should support ourselves on top of that.
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Modern Async Primitives on iOS, Android, and the Web
In this space, we also have the somewhat related term blocking. Java's NIO library is one well-known non-blocking tool used for managing multiple tasks on a single Java thread. When listening to sockets, most of the time a thread is just blocked, doing nothing until it receives some data. So, it's efficient to use a single thread for monitoring many sockets, to increase the likelihood of the thread having some actual work to do. The Selector API does this but is notoriously challenging to program well. Instead, developers use frameworks like Netty which abstract some of NIO's complexity and layer on some best practices.
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An investigative journey through concurrent data structures
DirectByteBuffer exhibits an intriguing behavior: it deallocates its backing memory during the finalization process, which occurs after garbage collection (GC) cycles. This poses an issue if your system is conservative with on-heap allocations, leading to infrequent GC cycles. In such cases, there could be a significant delay between the time the memory becomes unreferenced and when it is actually deallocated. This behavior could, in some respects, mimic a memory leak.
This is why some libraries hacks into DirectByteBuffer to deallocate memory explicitly, bypassing the finalizer altogether. For instance, the Netty library has implemented such a workaround, see Netty as an [example](https://github.com/netty/netty/blob/795db4a866401aa172757b95...).
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Scaling to ~15K requests per second with Java – Part 1
Apologies replying to myself, but Netty, which underpins many of the popular Java backend frameworks, see backward compatibility as more important than supporting green threads.
https://github.com/netty/netty/issues/12816
It'll be interesting to see who (if anyone) picks up Netty's mantle in the Project Loom world.
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Netty VS java-http - a user suggested alternative
2 projects | 25 May 2023
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Is jre17 the problem? How do I get an old eclipse? Error: Could not find or load main class netty.DiscardServer Caused by: java.lang.ClassNotFoundException: netty.DiscardServer
Looks fairly recent so I'm glad I had a pre oct22 build https://github.com/netty/netty/issues/12737
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What are your (favourite) Java best practices, personal tips, hints or just underrated stuff in general?
This is better? https://github.com/netty/netty/blob/4.1/pom.xml
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Lessons learned from picking a Java driver for Amazon ElastiCache for Redis - Part 2
Given the fact that Lettuce is built with Netty, we also immediately noticed quite an impact on the initialization time (cold start) of our lambda function. Netty is really fast while executing, but takes a bit of time to initialize. The new Lambda Snapstart functionality might help with that.
What are some alternatives?
DCEVM - Dynamic Code Evolution VM for Java 7/8
Undertow - High performance non-blocking webserver
Lombok - Very spicy additions to the Java programming language.
OkHttp - Square’s meticulous HTTP client for the JVM, Android, and GraalVM.
HotswapAgent - Java unlimited redefinition of classes at runtime.
gRPC - The Java gRPC implementation. HTTP/2 based RPC
JHipster - JHipster, much like Spring initializr, is a generator to create a boilerplate backend application, but also with an integrated front end implementation in React, Vue or Angular. In their own words, it "Is a development platform to quickly generate, develop, & deploy modern web applications & microservice architectures."
Grizzly
Immutables - Annotation processor to create immutable objects and builders. Feels like Guava's immutable collections but for regular value objects. JSON, Jackson, Gson, JAX-RS integrations included
KryoNet - TCP/UDP client/server library for Java, based on Kryo
JavaParser - Java 1-18 Parser and Abstract Syntax Tree for Java with advanced analysis functionalities.
MINA - Mirror of Apache MINA