Real-Time Python Web: Gevent and Socket.io

A brief introduction to modern Perl programming tools that I gave at the OpenTech conference in Spetember 2010.

The document discusses asynchronous programming in PHP using non-blocking I/O and event loops. It covers using asynchronous techniques like ReactPHP to scrape web pages concurrently without blocking. Promises and streams are also discussed as ways to handle asynchronous operations and pass data between components. Finally, messaging techniques like websockets and WAMP are presented as ways to build real-time applications.

The document describes a project to build a website called PerkyProfiler that retrieves user profile information from different services like GitHub, Flickr, and Twitter by taking URLs as input. It will use Perl and several Perl modules. The project will be built using the Catalyst web framework and Moose/MooseX for object-oriented programming. It describes using Moose roles, custom types, declarative class definitions, and functional programming techniques in Perl. The goal is to generate a unified user profile by combining data from different services for a given URL.

This document discusses using an HTTP proxy to load specific web pages for testing purposes. It explains that many web pages contain resources from multiple domains that cannot be saved locally. An HTTP proxy can be used to intercept requests and redirect local URLs to a test server, while passing through external URLs to the actual web server. The document provides code examples for setting up an HTTP proxy using HTTP::Proxy and modifying the LWP user agent to handle local and remote URLs differently. Using this approach allows a test loop to load repeatable web page content from both local and external sources.

Why is blocking IO so bad? Why is non-blocking code with callbacks so bad? Here are a few ways to deal with both problems in Perl.

I went to JSConf.eu 2009 and was asked to present a "summary" of my take aways from the conference at Gothenburg DotnetForum in December 2009.

The document discusses using Node.js to build streaming services. It describes how Node.js allows for scalable server-side code using JavaScript and mentions libraries like JSONStream that can be used to parse JSON streams. The document also discusses different types of streaming like simplex, throughput, and duplex streaming and how to manage backpressure in streams.

Static typing in Vault refers to enforcing the structure and location of secrets stored in Vault. This can be achieved by using a script or tool to validate secrets against JSON schemas before they are written or accessed. The schemas define the required properties and structure for different secret types. Using a generic validation tool allows schemas to be centrally defined and ensures secrets match the expected format, reducing errors from incorrectly structured secrets.

Small Node.js proxy to turn a paginated JSON REST API into a CSV streaming download. Examples of code and patterns. Presented at the London Node User Group meetup, April 2014

DBIx::MoCo is an ORM for MySQL and SQLite that provides easy SQL operations and Ruby-like list methods for retrieving and manipulating data. It supports features like caching, relationships between models, and transparent type inflation. Tests can be written using fixtures that load sample data from YAML files. While it aims to be simple and fast, its documentation is limited and some bugs may exist.

- PSGI (Perl Web Server Gateway Interface) and Plack provide a common interface and utilities for building web applications and servers in Perl. - PSGI defines a standard interface that web frameworks can implement to work with different server implementations. Plack provides server implementations like standalone, FastCGI and Apache modules. - This allows frameworks to focus on the application code instead of server specifics, and servers to handle multiple frameworks. Common middleware and testing utilities are also included. - Examples of frameworks that have adopted PSGI include Catalyst, Maypole and Mojolicious. Popular servers built on Plack include Starman and Dancer.

The document discusses Concurrency-oriented Programming (COP) using Erlang. It explains how Erlang programs work using lightweight processes that communicate asynchronously via message passing. This allows for high performance, reliability, and scalability. It provides examples of stateless server processes and using CouchDB for schema-free document storage accessible via REST APIs. Ruby libraries for interacting with CouchDB are also mentioned.

This document discusses the evolution of web development in Perl, from CGI scripts to modern PSGI-based frameworks. It introduces PSGI as an interface between web applications and web servers, and Plack as a toolkit for building PSGI applications and middleware. The document outlines many PSGI web servers and frameworks that can be used to build and deploy Perl web applications according to the PSGI standard.

This document discusses event loops and how they work. Event loops allow non-blocking operations by listening for events like network data or user input in parallel. They achieve this through callbacks, select(), threads, or other asynchronous programming techniques. Common examples of event loops include browser JavaScript, game engines, servers, and other applications that perform non-blocking IO operations. Event loops can be complex to work with correctly due to issues like race conditions, so abstractions like promises are recommended.

Pushing symfony events in real time to your clients This talk, held at the symfony live Paris unconference, gives an overview about how events thrown in symfony can be dispatched in real time to web clients. It describes the architecture of the solution and provides examples using the open source comet server APE

How to make web socket daemons with PHP. Also in this talk we'll look at some similar topics like MQs

Things like Infrastructure as Code, Service Discovery and Config Management can and have helped us to quickly build and rebuild infrastructure but we haven't nearly spend enough time to train our self to review, monitor and respond to outages. Does our platform degrade in a graceful way or what does a high cpu load really mean? What can we learn from level 1 outages to be able to run our platforms more reliably. We all love infrastructure as code, we automate everything ™. However making sure all of our infrastructure assets are monitored effectively can be slow and resource intensive multi stage process. During this talk we will investigate how we can setup and observe a service mesh platform using HashiCorp's Consul Connect by recording its metrics. logs and traces. This talk will focus on configuring and analysing the metrics, logs and traces Consul Connect produces using Prometheus, Loki, Tempo and Grafana.

This talk was given at the Dutch PHP Conference 2011 and details the use of Comet (aka reverse ajax or ajax push) technologies and the importance of websockets and server-sent events. More information is available at http://joind.in/3237.