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AwareInterface, Graylog2 with Logstash and Contributing to the new PHPUGHH website - PHP UserGroup

link to meetup event.

Where

Jimdo
Stresemannstraße 375
Hamburg

AwareInterface By Stev Leibelt

  • reminder of dependency injection
  • increases the readability of a class structure
  • defined way of inject object/typ
  • interface injection could lead to a project based rule to distinguish between mandatory and optional dependencies
  • slides available hear.

Logstash and Graylog2 by Alexander Bernhardt

Simple log all.

questions to the log

  • what happens on the other server?
  • what happens when and on what circumstance?
  • what are you logging?

how to solve this?

By using Logstash, Redis and ElasicSearch, aggregate all and push all to a graylog2.

  • graylog can do some kind of monitoring, known as streams.
  • you can add a alert method to each stream.
  • nagios can listen to a graylog stream.
  • could not replace statsd or graphite

Talk And Call For PHPUGHH Website By Stephan Vock And Ole Michaelis

  • two Pages for one user group, which one to choose?
  • the usergroup decides to use the new page.
  • you need to have installed jekyll, rake or use the vagrant box
  • directory structure
    • each speaker should pull his own talk below "talks"

How To Contribute

  • fork repository
  • git checkout -b feature/foo
  • do the changes
  • git commit
  • pull request to the main repository
  • github.io builds new page on its own
  • git remote add upstream [email protected]:phpughh/phpughh.github.com
  • git fetch upstream
  • git merge upstream/master
  • git push
  • issues are available
  • enhancement issues is the roadmap
  • open issues if needed
  • links available as ticket
  • take a look to the bephpug (github)
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Next Level DevOps And Softwarearchitecture Of A Modern Onlinegame - PHPUserGroup Meetup

Mindworks
Jarrestraße 42A
Hamburg

Next Level DevOps By Ole Michaelis

Preliminary Consideration

  • infrastructure is created by feature (but without clean up or cleaning things up)
  • did a practical training round in admin team for half a year

What Is DevOps?

  • you build it, you run it (until it goes offline)
  • monitor it, automate it, measure/metering it
  • build small tools and services to form an api

How Became A DevOp?

  • extend your development skills
  • learn and do refactoring
  • learn the shell
  • learn the operation system
  • pull deployment with deployment hooks

Softwarearchitecture Of A Modern Onlinegame By Tobias Rojahn

Preliminary Consideration/Requirements

  • crossplattform (mobile and web)
  • realtime game (fast information about status changes)
  • multiplayer (user can influence each other)

Architecture

  • user (request websocket from web server)
  • NodeJS (handles websocket connection to redis and global redis)
  • redis (message queue with push and pull)
  • php worker (long living php process, asks webservices or database, are forkable by using php forking mechanism)
  • if something is calculated by the php worker, the message is pushed in the global redis

The PHP Worker

  • long living workers
  • worker is observing the queue (and event handling) and is pushing the message to the dispatcher
  • each message has a type to push to the right controller
  • dispatcher is using the right controller (with a bunch of internal to external mapping and nearly zero logic)
  • controller is pushing the message to the right domain service (using the right domain objects and/or repositories)
  • controller is working with multiple db views
  • domain service can also call the event dispatcher to trigger other systems (not core systems)

Deamon

  • only creates messages
  • just time controlled game events

Cronjob

  • only creates messages

NodeJS

  • socket (via socket io) replaces session
  • add additional data (with indexes to gain speed) to the socket (via message queues from php)
  • node to php: send all data
  • php to node: a combination of data to all connected sockets
  • forwarding of fitting messages (with removing of internal datas)

Testing

  • API-Tests
    • description
    • ingoing message (test data)
    • outgoing message (expectations)
  • based on fitrues
  • only php layer
  • rollback on each test

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High-Performance Websites - PHPUG and WebPerformanceUG

Arne Blankerts, Stefan Priebsch - High-Performance Websites

This talk contains information about architecture.

Classical Architecture

When have done this for quite a while.

Browser->WebServer->PHP-Database

This works best in the past. General solution was to add more hardware and that leads to more errors.

  • monolithic architecture
  • normalized data (in database)
  • pull-principle (browser is build per request)
  • full page cache is bad
  • edge site include (for varnish/ESI) is also not the best solution

We are fast when:

  • no real workload per request
  • everything from memory
  • denomalized data
  • snippets

How Often Does Data Change (From Rare To Often)?

Based on the example of a shop system.

  • catalog
  • product information
  • price
  • availability

Who Changes Data?

  • editor
  • product manager
  • receipt of goods / outgoing goods

New Architecture (CQRS-Architecture)

  • images and static content is deliverd by static content webserver
  • only dynamic part is done by php
  • snippets are deliverd, not full pages

PHP->Key-Value-Store->Backend-Process->Database
or
PHP->Web-Service->Database

Benefit of key-value-store (for example redis) is, that the database itself can die and the only thing that happens is, that the entries are becoming obsolete.

But What About Filternavigation?

Use a searchengine that returns simple a collection of product keys. Use this product keys and ask the key value store to fetch product data.

But What About Personalization?

  • use snippets with variables and default values
  • fetch this snippet in the key value store
  • thanks to "time to death" feature provided by many key-value-stores, you can easily define "special offers" per day and so on

Nice meetup, incredible how many people are attending already.

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