jonatan-ivanov

gpg 2.2.9 does not work with keybase keys, install 2.2.8

brew unlink gnupg
brew install https://raw.githubusercontent.com/Homebrew/homebrew-core/4451447c6a069b0f7ce5d8c88e4da7c4c89fbe52/Formula/gnupg.rb

in order to make gpg work, GPG_TTY needs to be set (.bashrc, .zshrc, etc.):

export GPG_TTY=$(tty)

jonatan-ivanov

Keybase proof

I hereby claim:

• I am jonatan-ivanov on github.
• I am jonatan_ivanov (https://keybase.io/jonatan_ivanov) on keybase.
• I have a public key whose fingerprint is E927 5E0D A474 6067 758E B375 BB4A 6DDD 6E2A D69F

To claim this, I am signing this object:

jonatan-ivanov

ssh-keygen -t rsa -C "email"

jonatan-ivanov

@Configuration
@EnableScheduling
@EnableBatchProcessing
public class BatchConfiguration {
  @Bean
  @StepScope
  public ResourceReader reader(
      @Value("...") String url,
      @Value("...") int pageSize,
      @Value("#{jobParameters['ResourceReader.index']}") int index) {

jonatan-ivanov

Responsible Microservices (Nate Schutta)

• Thinking Architecturally (book)
• Building Evolutionary Architectures (book)
• Should that be a Microservice? Keep These Six Factors in Mind (article)
• Distributed big balls of mud (article)
• Modular monoliths by Simon Brown (talk)
• git heatmap: git log --pretty=format: --name-only | sort | uniq -c | sort -rg | head -10
• Getting Empirical about Refactoring (article)
• Turbulence (tool)
• CodeScene (tool)

jonatan-ivanov

Andrei Pangin - Memory Footprint of a Java Process

• pmap
• Native Memory Tracking
• Memory areas
  • GC memory consumption
  • Class Loader memory consumption
  • Compiler (JIT)
  • (Threads](https://vimeo.com/364039638#t=23m05s)
  • Symbols
• Internal/Other

jonatan-ivanov

4.0.0 org.springframework.boot spring-boot-starter-parent 2.4.2-SNAPSHOT

jonatan-ivanov

{
    "status": "UP",
    "components": {
        "discoveryComposite": {
            "status": "UP",
            "components": {
                "discoveryClient": {
                    "status": "UP",
                    "details": {
                        "services": [

jonatan-ivanov

Complicated API

• As a user, it is somewhat complex and quite puzzling using the API
• There are a lot of components
• The components are doing different things as I would expect based on their names
• I think it would worth a review and refactor to make it more usable.

Examples

• GlobalMetricsProvider
  • Based on its name, it should provide Metrics instances
• In fact, it provides two things neither of them are Metrics

jonatan-ivanov

adoptopenjdk:11-jre-hotspot
java.runtime.name: OpenJDK Runtime Environment
java.runtime.version: 11.0.11+9
java.vendor: AdoptOpenJDK
java.version: 11.0.11
java.vm.name: OpenJDK 64-Bit Server VM
java.vm.vendor: AdoptOpenJDK
java.vm.version: 11.0.11+9