spring-data-relational
Netty
spring-data-relational | Netty | |
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11 | 53 | |
728 | 32,796 | |
-0.4% | 0.4% | |
9.1 | 9.6 | |
7 days ago | 3 days ago | |
Java | Java | |
Apache License 2.0 | Apache License 2.0 |
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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-data-relational
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You might not need an ORM
What do you think of Spring Data JDBC (https://spring.io/projects/spring-data-jdbc)?
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Architecture Pitfalls: Don’t use your ORM entities for everything — embrace the SQL!
What do you think of Spring Data JDBC?
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Where is the Lock annotation in Spring-data-jdbc?
Link to GitHub: https://github.com/spring-projects/spring-data-relational/blob/main/spring-data-relational/src/main/java/org/springframework/data/relational/repository/Lock.java
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What are some more options or good practices for dynamic SQL query building?
I would ignore the hipster jOOQ and similar and start with Spring Data JDBC https://spring.io/projects/spring-data-jdbc
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Which ORM framework are you using with Java, and why?
This makes Spring Data JDBC a simple, limited, opinionated ORM.
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Solution to NullPointerException in java?
Though JPA is fine, and yes hibernate can be used under the hood. When it comes to spring it is mostly what level of abstraction you want. Or you could go with JDBC. And you have a spring data JDBC for having a similar abstraction as to the JPA one.
- Is there a reason to not use Spring Data JPA and Jackson in big projects?
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Jodd – The Unbearable Lightness of Java
This is not correct. You're thinking Spring Data JPA [1]. Spring Data JDBC [2] does _not_ use any Hibernate nonsense.
[1] https://spring.io/projects/spring-data-jdbc
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I wrote an MVP in Java and it was actually pleasant
The data moved from the awesome-but-confusing DynamoDB... into PostgreSQL✨, using Spring Data JDBC.
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20 years of Hibernate
I didn't have much experience with Hibernate and Spring (was using JavaEE prior), it could very possibly be the case, that the team simply misused Hibernate. We might have used n+1 queries, eager loading (although I mildly remember we fixed this), oh and we had the old id generation via sequence in Hibernate, that was really pain to optimize properly. Oracle 11 does not have identity generation. I remembered this only becuase I created an issue at the time. Still not implemented, but can't blame them, who the hell uses sequences as ID generation nowadays.
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?
MyBatis - MyBatis SQL mapper framework for Java
Undertow - High performance non-blocking webserver
high-performance-java-persistence - The High-Performance Java Persistence book and video course code examples
OkHttp - Square’s meticulous HTTP client for the JVM, Android, and GraalVM.
JDBI - The Jdbi library provides convenient, idiomatic access to relational databases in Java and other JVM technologies such as Kotlin, Clojure or Scala.
gRPC - The Java gRPC implementation. HTTP/2 based RPC
jodd-json - JSON Java serializer and parser.
Grizzly
nanohttpd - Tiny, easily embeddable HTTP server in Java.
KryoNet - TCP/UDP client/server library for Java, based on Kryo
Ebean ORM - Ebean ORM
MINA - Mirror of Apache MINA