Oleksandr Balashov ambalashov

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

Introduction to Kafka

Kafka acts as a kind of write-ahead log (WAL) that records messages to a persistent store (disk) and allows subscribers to read and apply these changes to their own stores in a system appropriate time-frame.

Terminology:

Producers send messages to brokers
Consumers read messages from brokers
Messages are sent to a topic

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = [email protected]:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

	package benchmark;

	import org.openjdk.jmh.annotations.*;

	import java.lang.invoke.MethodHandle;
	import java.lang.invoke.MethodHandles;
	import java.lang.reflect.Field;
	import java.lang.reflect.InvocationTargetException;
	import java.util.concurrent.TimeUnit;

	public class AcceptGzipEncodingFeignRequestInterceptor implements RequestInterceptor {

	private static final String ACCEPT_ENCODING_HEADER = "Accept-Encoding";

	private static final String GZIP_ENCODING = "gzip";

	private static final String DEFLATE_ENCODING = "deflate";

	@Override
	public void apply(RequestTemplate template) {

	@Bean
	public Action<Chain> handlers(PersonRepository persons,
	HotStream<Person> personStream,
	ObjectMapper jsonMapper,
	ModelMapper beanMapper) {
	return (chain) -> {
	chain.handler("person", ctx ->
	ctx.byMethod(spec ->
	spec
	.get(c -> {

	{
	"title": "rtb_trace",
	"services": {
	"query": {
	"list": {
	"0": {
	"query": "_type:rtb_trace",
	"alias": "",
	"color": "#7EB26D",
	"id": 0,

	package de.tutorials.training.fx.proxy;

	import javafx.application.Application;
	import javafx.scene.Scene;
	import javafx.scene.layout.StackPane;
	import javafx.scene.web.WebEngine;
	import javafx.scene.web.WebView;
	import javafx.stage.Stage;

	import java.net.InetSocketAddress;

	;; Datomic example code
	(use '[datomic.api :only (db q) :as d])

	;; ?answer binds a scalar
	(q '[:find ?answer :in ?answer]
	42)

	;; of course you can bind more than one of anything
	(q '[:find ?last ?first :in ?last ?first]
	"Doe" "John")

	(defn shut-down-hook []
	;; Release resources etc.
	)

	(defn -main [& args]
	(.addShutdownHook (Runtime/getRuntime)
	(Thread. shut-down-hook)))