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RAFT

• https://raft.github.io/raft.pdf

Replicated state machine

• Replicated state machines are typically implemented using a replicated log.
• Each server stores a log containing a series of commands, which its state machine executes in order.

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Optimizing java base docker images size from 674Mb to 58Mb

• https://medium.com/@RoussiAbel/optimizing-java-base-docker-images-size-from-674mb-to-58mb-c1b7c911f622

# First stage, build the custom JRE
FROM eclipse-temurin:17-jdk-alpine AS jre-builder

RUN mkdir /opt/app
COPY . /opt/app

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Most-Used Distributed System Design Patterns

• https://medium.com/javarevisited/most-used-distributed-system-patterns-d5d90ffedf33

Ambassador — Proxy

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Race data example

The result is 11, 12, or 13

// balance = 10
public void deposit(int amount) {
  balance += amount;
}

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java-off-heap-database

• https://tuhuynh.com/posts/java-off-heap-database/

Java NIO ByteBuffer class

• Cấp phát bộ nhớ cho ByteBuffer sử dụng method là allocateDirect (thay vì allocate), khi xài method này thì Java sẽ gọi thẳng tới lệnh cấp phát bộ nhớ từ OS, và bộ nhớ được cấp phát sẽ không nằm trong sự quản lí của Java Heap Space cũng như Java GC.

Person person = new Person();
//…

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Reactor

Sinks

• https://projectreactor.io/docs/core/release/reference/#sinks

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JMH

Source

• https://github.com/melix/jmh-gradle-plugin
• Example: https://github.com/melix/jmh-gradle-plugin/blob/master/samples/simple-java/kotlin-dsl/settings.gradle.kts
• Example - virtual thread: https://github.com/rusher/JdbcLoomPerftest/blob/main/src/main/java/org/mariadb/loom/BenchmarkLoom.java
• Example for benchmark virtual thread - https://github.com/Verdoso/jmh-throttled-virtual-threads/blob/master/src/main/java/org/greeneyed/jmh_throttled_virtual_threads/BenchmarkVirtualThreads.java
• Example for benchmark apache fury, SBE,...
• GRPC bidirectional benchmark

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RSocket

Server

• https://docs.spring.io/spring-framework/reference/rsocket.html#rsocket-annot-responders-server

Client

• https://docs.spring.io/spring-framework/reference/rsocket.html#rsocket-requester-client

Setup Server calls client

• https://spring.io/blog/2020/05/12/getting-started-with-rsocket-servers-calling-clients

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Lmax disruptor

Example

• lmax-disruptor-bank

Processor

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Benchmark tools

Http 1

• autocannon: better than wrk2
• wrk2

Grpc

• ghz
• k6
• k6 - grpc bidirectional