DasBrain

import java.lang.constant.ClassDesc;
import java.lang.constant.DirectMethodHandleDesc;
import java.lang.constant.DirectMethodHandleDesc.Kind;
import java.lang.constant.MethodHandleDesc;
import java.lang.invoke.CallSite;
import java.lang.invoke.ConstantCallSite;
import java.lang.invoke.LambdaMetafactory;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;

GavinRay97

  private async _runK6(metadata: RunK6Metadata, config: K6Options) {
    const { queryName, outputFile } = metadata

    // If "debug" true, log all HTTP responses
    if (this.config.debug) config.httpDebug = 'full'

    // Write the K6 configuration JSON to a temp file, to pass as CLI flag
    const tmpConfig = path.join(__dirname, 'tmp', `${queryName}_config.json`)
    await fs.outputJSON(tmpConfig, config)

bokks

/* This shows how to convert a regular SafeURL to a Dispatcher URL */
/* The normal URL would be like pyActivity=Work-.AttachmentStatus&AttachmentHandle=XXX */
/* When you pass the SafeURL to pega.u.d.convertToRunActivityAction(oSafeURL) , the URL becomes a dispatcher */
/* pyActivity=pzRunActionWrapper&pzActivity=Work-.AttachmentStatus&AttachmentHandle=XXX&pzActivityParams=AttachmentHandle */
/* pzRegisterActivity or long form of registration works only with such Dispatcher URLs */

<script>
function CheckAttachmentStatus(LinkHandle,strAttachmentHandle)
{
   var oSafeURL= new SafeURL("Work-.AttachmentStatus",getReqURI());

lamngockhuong

import java.io.IOException;
import java.util.Vector;

/**
 * Created by moshee
 * on: 07/06/17
 * to compile in place: `javac ConsumeHeap.java`
 * Execute: `java -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/var/log/app-`date +%s`-pid$$.hprof -XX:OnOutOfMemoryError=/opt/app/bin/upload_dump_s3.sh -Xmx2m ConsumeHeap`
 * HeapDumpOnOutOfMemoryError specifies to automatically create a dump when OOM occures
 * HeapDumpPath supplies a path to put that file

rponte

public class HowToUseIt {
 
  /**
   * Usually we'll have a single instance per client
   */
  private static final SingleThreadPool THREAD_POOL = new SingleThreadPool();
  
  public void executeAsync() {
    try {
      

jdillon222

#!/bin/bash

#######################################################################
#############################Heapdumps.sh #############################
#######################################################################
##                                                                   ##
##   Heapdumps.sh provides a means for triggering Java heap records  ##
##   of the main JVM process on EC2 instances.                       ##
##   Records will be added to a temporary directory in /var/temp     ##
##   and then transferred to an S3 bucket named ____                 ##

miguno

Notes

• Good: very quick snapshotting even for large heap spaces (e.g. works if your JVM process would otherwise timeout and die)
• Bad: such a memory snapshot contains significantly less useful information than YourKit's "enhanced" memory snapshots.

Usage

# 1. Find the relevant JVM pid on the target machine
$ ps ...

djspiewak

Thread Pools

Thread pools on the JVM should usually be divided into the following three categories:

1. CPU-bound
2. Blocking IO
3. Non-blocking IO polling

Each of these categories has a different optimal configuration and usage pattern.

mosheeshel

import java.io.IOException;
import java.util.Vector;

/**
 * Created by moshee
 * on: 07/06/17
 * to compile in place: `javac ConsumeHeap.java`
 * Execute: `java -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/var/log/app-`date +%s`-pid$$.hprof -XX:OnOutOfMemoryError=/opt/app/bin/upload_dump_s3.sh -Xmx2m ConsumeHeap`
 * HeapDumpOnOutOfMemoryError specifies to automatically create a dump when OOM occures
 * HeapDumpPath supplies a path to put that file

0x263b

Random color from string in javascript

Consider a list of strings you need to permanently assign a random color.

First you should turn the string into a hash.

var string = "string"
var hash = 0