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def hasChanges(String path) {
    return !sh(script: "git diff --name-only HEAD~1 HEAD | grep '${path}' || true", returnStdout: true).trim().isEmpty()
}

pipeline {
    agent any

    stages {
        stage('Detect changes') {
            steps {

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$npm install -g @github/copilot
$copilot
┌──                                                                         ──┐
│                                                           ▄██████▄          │
    Welcome to GitHub                                   ▄█▀▀▀▀▀██▀▀▀▀▀█▄
    █████┐ █████┐ █████┐ ██┐██┐     █████┐ ██████┐     ▐█      ▐▌      █▌
   ██┌───┘██┌──██┐██┌─██┐██│██│    ██┌──██┐└─██┌─┘     ▐█▄    ▄██▄    ▄█▌
   ██│    ██│  ██│█████┌┘██│██│    ██│  ██│  ██│      ▄▄███████▀▀███████▄▄
   ██│    ██│  ██│██┌──┘ ██│██│    ██│  ██│  ██│     ████     ▄  ▄     ████
   └█████┐└█████┌┘██│    ██│██████┐└█████┌┘  ██│     ████     █  █     ████

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# 1. สร้าง project ด้วย Spec-kit เพื่อสร้าง specification ขึ้นมา
$uvx --from git+https://github.com/github/spec-kit.git specify init demo-api

                  ███████╗██████╗ ███████╗ ██████╗██╗███████╗██╗   ██╗                  
                  ██╔════╝██╔══██╗██╔════╝██╔════╝██║██╔════╝╚██╗ ██╔╝                  
                  ███████╗██████╔╝█████╗  ██║     ██║█████╗   ╚████╔╝                   
                  ╚════██║██╔═══╝ ██╔══╝  ██║     ██║██╔══╝    ╚██╔╝                    
                  ███████║██║     ███████╗╚██████╗██║██║        ██║                     
                  ╚══════╝╚═╝     ╚══════╝ ╚═════╝╚═╝╚═╝        ╚═╝                     
                                                                                        

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# Hybrid search
GET rag-langchain/_search
{
  "retriever": {
    "rrf": {
      "retrievers": [
        {
          "standard": {
            "query": {
              "semantic": {

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Installing ArgoCD

1. We will start with launching minikube cluster.

minikube start --driver=docker

2. Create a namespace for argocd

kubectl create namespace argocd

3. Apply ArgoCD manifest installation file from ArgoCD github repository

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1. Start minikube

$minikube start

$minikube status
minikube
type: Control Plane
host: Running
kubelet: Running
apiserver: Running

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.m2/repository/io/opentelemetry/opentelemetry-sdk-trace/1.53.0/opentelemetry-sdk-trace-1.53.0.jar)
2025-09-02T11:41:27.145+07:00  INFO 91609 --- [demo_otel] [main] [ ] i.m.c.instrument.push.PushMeterRegistry  : 
Publishing metrics for OtlpMeterRegistry every 1m to http://localhost:4318/v1/metrics 
with resource attributes {service.name=demo_otel}

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# Start with Green tea
$GOEXPERIMENT=greenteagc go run main.go

2025/08/27 11:01:27 pprof server on :6060
2025/08/27 11:01:27 Server running on :8080 with Green Tea GC enabled
/gc/heap/allocs:bytes = {1 2402052896 <nil>}
/gc/heap/frees:bytes = {1 2396205576 <nil>}
/gc/heap/allocs:objects = {1 22943712 <nil>}
/gc/heap/frees:objects = {1 22922079 <nil>}
/gc/heap/live:bytes = {1 5356376 <nil>}

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Script Explanation: deleted_fd_cleanup.sh

This script helps identify and optionally truncate files that have been deleted but are still held open by processes on a Linux system (commonly causing df to show full disk while du shows much less).

---

Features

1. Detects all (deleted) files currently held open by processes using lsof.
2. Ensures each PID+FD is handled only once to avoid duplicate operations.

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@EnableResilientMethods
class Demo {

  // 5 retry attempts and an exponential back-off strategy with a bit of jitter
  @Retryable(maxAttempts = 5, delay = 100, jitter = 10, multiplier = 2, maxDelay = 1000)
  public void sendNotification() {
      this.jmsClient.destination("notifications").send(...);
  }

  //