wsky

#!/bin/bash
#how to: . call.sh
call_api() {
local APPKEY=$1
local SECRET=$2
local SESSION=$3
local METHOD=$4
local URL=$5
local IP=$6
local SSL=$7

wsky

systemtap

http://developerblog.redhat.com/2014/01/10/probing-java-w-systemtap/

btrace


lightweight-java-profiler
https://code.google.com/p/lightweight-java-profiler/

wsky

http://www.infoq.com/articles/Open-JDK-and-HashMap-Off-Heap

https://github.com/OpenHFT/HugeCollections/blob/master/collections/src/test/java/net/openhft/collections/fromdocs/OpenJDKAndHashMapExamplesTest.java

   SharedHashMap<String, BondVOInterface> shm = new SharedHashMapBuilder()
                .generatedValueType(true)
                .entrySize(512).file(new File(TMP + "/shm-myBondPortfolioSHM")).kClass(String.class).vClass(BondVOInterface.class).create();

wsky

Jetty supports both a client and a server implementation for the SPDY protocol, beginning with versions 7.6.2 and 8.1.2.

http://www.chromium.org/spdy/spdy-protocol

direct usage:

• SPDY Client - SPDY Server

remap in/out of the box:

• SPDY Client - SPDY PROXY - HTTP Server
• HTTP Client - SPDY PROXY - SPDY Server

wsky

sysctl kern.maxfiles
#kern.maxfiles: 12288
sysctl kern.maxfilesperproc
#kern.maxfilesperproc: 10240
sudo sysctl -w kern.maxfiles=1048600
#kern.maxfiles: 12288 -> 1048600
sudo sysctl -w kern.maxfilesperproc=1048576
#kern.maxfilesperproc: 10240 -> 1048576

sudo sysctl -w net.inet.tcp.rfc1323=1

wsky

#https://kenai.com/projects/btrace/pages/UserGuide
btrace pid script.java

wsky

//https://github.com/wsky/cross-fire/blob/master/java/src/main/java/com/taobao/top/integration/Util.java

  private static String doSign(String secret, Map<String, String> data) {
  	String[] keys = new String[data.size()];
		data.keySet().toArray(keys);
		Arrays.sort(keys);
		StringBuilder strb = new StringBuilder();
		strb.append(secret);
		for (String k : keys) {
			// data.get(k) != "" sometimes unnecessary

wsky

	// context interface to resolve env dependency
	public interface ContextService {
  		public Object get(String key);
	}

	// context base
	// alose can impl via aop inspector
	public class BizServiceAdapter implements BizInterface {
		private ContextService context;
		private BizService bizService;

wsky

//view all certificates
certmgr.msc

//http://msdn.microsoft.com/en-us/library/bfsktky3(VS.80).aspx
//make certificates
makecert -sk testcer -n "CN=testcer" -ir localmachine -ss my -sky exchange testcer.cer
makecert -r -pe -n "CN=workflowcer" -b 01/01/2005 -e 01/01/2050 -sky exchange -ss my
makecert -r -pe -n "CN=testcer" -b 01/01/2005 -e 01/01/2050 -sky exchange -ss my

wsky

public class NamedThreadFactory implements ThreadFactory {
  static final AtomicInteger poolNumber = new AtomicInteger(1);

  final AtomicInteger threadNumber = new AtomicInteger(1);
	final ThreadGroup group;
	final String prefix;
	final boolean isDaemon;
	final int priority;

	public NamedThreadFactory() {