aksh1618

Parsing & Conversion

• Json to YAML: json2yaml.com
• Json/POJO Format: json2pretty.com

Calculators & Evaluators

• Regex Tool: regex101
• Cron Tool: cron-expression-generator-quartz
• JsonPath Evaluator: Jayway JsonPath Evaluator
• Java SimpleDateFormat: Java SimpleDateFormat Tester

aksh1618

• aletheia (signature embedding tool)
  • repo: https://github.com/danielquinn/aletheia
  • scope: Currently in Python, needs to be ported to additional languages

aksh1618

• Guide to "Reactive" for Spring MVC Developers (2018) by Rossen Stoyanchev (Pivotal): Great explanantion of moving from RestTemplate to WebClient while staying with WebMVC/Tomcat
• Do’s and Don’ts: Avoiding First-Time Reactive Programmer Mines (2019) by Sergei Egorov (Pivotal):
  • Need to subscribe and use the return value
  • Do NOT use for CPU intensive tasks
  • There is probably a better operator for what you are trying to do: https://projectreactor.io/docs/core/release/reference/#which-operator
  • Migrate in steps, but block only once
  • No ThreadLocals: Use deferWithContext or SchedulerHooks
  • Resiliency: timeout, retry, default, error etc.
  • Run blocking code on custom schedulers: publishOn & subscribeOn
• Stack traces for Debugging: checkpoint, ReactorDebugAgent

aksh1618

/*
 * Copyright 2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software

aksh1618

• Reactive Streams Spec: The purpose of Reactive Streams is to provide a standard for asynchronous stream processing with non-blocking backpressure.
  • Publisher:

    void subscribe(Subscriber<? super T> s)

  • Subscriber:

    void onSubscribe(Subscription s);
    void onNext(T t);

void onError(Throwable t);

aksh1618

// Rust playground link: https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=7c51f91cfddb501bd24fdaa6d7238d80

const PAGESIZE: u64 = 4096;
const MIN_SIZE_KIB: u64 = 4;

fn main() {
    println!("Enter BadRAM string. It must be a single line of comma separated");
    println!("values, with address and mask alternating. This is basically the");
    println!("badram output from memtest86+ et al with all values in a single");
    println!("line without the `badram=` prefix.");