This document discusses the release of Symfony 3.0.0 and what is new compared to Symfony 2.x. Symfony 3.0 does not contain any new features, but rather focuses on compatibility layers and removing deprecated code and methods from Symfony 2.8. It provides a simple migration path for updating from Symfony 2.x to 3.0 using Composer. The key changes are removing deprecated functionality, standardizing the directory structure, and increasing the required PHP version to 5.5.9+.
This document discusses installing PHP7 on CentOS7 using Ansible. It provides commands to install the EPEL and Remi repositories, install PHP7 and related packages, and enable PHP7. It then shows how this process can be automated using Ansible roles and playbooks, including links to the example role and playbook on GitHub.
This document introduces WebSocket and how it can be used for real-time communication between a client and server. It discusses:
1. The basics of WebSocket including how the handshake process works and how events and messages are exchanged.
2. Two approaches for integrating WebSocket into a Ruby/Rails application - as a standalone service or within the application stack. Using it standalone allows the service to run independently while integrating it brings challenges in handling long-running connections.
3. Key considerations for WebSocket including authentication, concurrency models, and whether the server process needs to run permanently to maintain open connections.
This document discusses how to create Mackerel plugins using mruby. It explains what Mackerel plugins are, the required format, and how to write command line tools and classes in mruby. It then provides an example of implementing Redis commands like SCARD and SMEMBERS in mruby-redis by reading the C source and making additions. This allows monitoring Redis set data with Mackerel. Finally, it shows a sample Mackerel plugin for monitoring Sidekiq job counts.
The document discusses a PHP implementation of a Game Boy emulator that runs in the terminal. It explains how the emulator works, including how it simulates the Game Boy's CPU, memory, display, sound, buttons and communication port in PHP code. It provides code examples for emulating the CPU instructions and reading button input from the keyboard.
Great Tools Heavily Used In Japan, You Don't Know.Junichi Ishida
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The document discusses Japanese Perl developers who attended YAPC::EU 2015. It introduces many popular Perl modules created by Japanese developers, such as WebService::Simple for making web service requests, Riji for creating blogs, and GrowthForecast for visualizing metrics graphs. It encourages attendees to talk to the Japanese developers about their work or any questions. It emphasizes that Japanese developers prioritize speed and simplicity in their modules due to their culture of valuing efficiency.