Scaling python webapps from 0 to 50 million users - A top-down approach

This talk presents php-resque which is a php port of resque which was built by the cool folks @ github.

This document is a presentation on Hadoop given by Søren Lund. It begins with disclaimers that the speaker has no production experience with Hadoop. It then provides an overview of Hadoop, how it addresses the problem of scaling to large amounts of data, and its core components. The presentation demonstrates how to install and run Hadoop on a single machine, provides examples of running word count jobs locally and on Hadoop, and discusses related tools like Hive and Pig. It concludes with notes on the Hadoop user interface, joins, running Hadoop in the cloud, and other Hadoop distributions.

This document discusses profiling Go programs. It begins by stating the golden rule of premature optimization and emphasizes the importance of measuring before optimizing. Several Go profiling tools are described, including tools for timing, CPU profiling, and memory profiling. An example of a badly implemented LRU cache is provided and profiled to identify inefficiencies. Various improvements are then made to the LRU cache and tested, including using a linked list, random eviction, and eliminating slice operations. The document concludes with a discussion of memory recycling in Go programs.

As more and more web applications integrate with third-party APIs and other external data, processing those external resources in the background more and more important. A simple job runner is a great start, however as your load increases, you very quickly outgrew that simplistic queuing system. We will cover where getting started using Resque and Redis, how to test your jobs, when it makes sense to use Resque, implementations of Resque in other languages, and look how I've used Resque.

Slides from the following talk presented at PyCon Australia 2015: https://www.youtube.com/watch?v=JlrkizEBjXk Ansible is a configuration management tool, written in Python, that has taken the world of IT automation by storm. Its most remarkable quality is simplicity. The Zen of Python is a set of aphorisms which capture the design philosophy of the Python language, one being "Simple is better than complex".

**The slides are not correctly rendered. The HTML/Javascript version is here: http://presentations.pothix.com/rubyconf2013/** This presentation shows what we have done with Ruby to create Locaweb's cloud computing product.

The document discusses the WordPress HTTP API and its helper functions for making HTTP requests. It explains that the WP HTTP API provides a powerful interface for making remote calls using functions like wp_remote_get(), wp_remote_post(), and wp_remote_request(). These functions return responses that can be parsed to retrieve things like the body, headers, response code, and response message. Additional resources for using the API are also provided.

Elasticsearch is a distributed, RESTful search and analytics engine built on top of Apache Lucene. After the initial release in 2010 it has become the most widely used full-text search engine, but it is not stopping there. The revolution happened and now it is time for evolution. We dive into current improvements and new features — how to make a great product even better. https://www.bigdataspain.org/2017/talk/elasticsearch-revolution-you-know-for-search Big Data Spain 2017 16th - 17th November Kinépolis Madrid

This document provides information about CPAN (Comprehensive Perl Archive Network) including what it is, how to use it, popular modules, authors, and tips. Some key points: - CPAN is a repository for Perl modules with over 12,000 modules and 3,400+ authors. It helps avoid duplicating code. - Popular ways to install modules include using the CPAN shell, CPANPLUS shell, or cpanminus command line tool. - Useful modules cover areas like web development, databases, testing, graphics, and more. Top authors contribute many modules. - Documentation for any module can be found via its perldoc or on search.cpan.org.

Benchmark OpenERP : testez les performances et la robustesse d'OpenERP sur vos volumes de données. Le benchmark technique d'OpenERP propose des scripts automatiques pour tester la charge d'OpenERP vis-à-vis de vos données et de votre activité.

Resque is a background processing library for Ruby that allows processing of jobs asynchronously via a queue using Redis. It uses workers that listen for jobs on queues and process them, and includes plugins like resque-lock to prevent duplicate jobs and resque-loner to relaunch failed jobs. The document discusses setting up Resque with God for monitoring workers, handling signals, and restarting workers gracefully on the bookandgolf.com project which synchronizes golf course data from multiple APIs into Redis.

Presentation I gave during DevOps Days Warsaw 2014 about combining Elasticsearch, Logstash and Kibana together or use our Logsene solution instead of Elasticsearch.

Алексей Туля, Senior Software Developer в Sam Solutions «Практический опыт профайлинга и оптимизации производительности Ruby-приложений» В своем докладе Алексей сделает краткий обзор различных реализаций Ruby, попытается найти причины, почему Ruby медленный. Рассмотрит вопрос сборки мусора в Ruby и вызова методов – почему в Ruby это дорого. Расскажет и покажет, что делать, чтобы поднять производительность, проведет обзор утилит для поиска проблемных мест, обзор профайлеров и расскажет, как интерпретировать результаты. Доклад в основном нацелен на практический подход по поиску проблем. Материал предназначен для пользователей Linux, поэтому все практические советы будут для ОС Linux.

This document summarizes Go-Couchbase, a Go client library for Couchbase. It provides functions for connecting to Couchbase clusters and buckets, and performing CRUD operations on documents. These include set(), get(), update(), delete(), and add() methods. Go-Couchbase is simple and thread-safe to use. It can also replicate data between Couchbase clusters.

Learn how to easily get started on cloud computing with fog. If you can control your infrastructure choices, you’ll make better choices in development and get what you need in production. You'll get an overview of fog and concrete examples to give you a head start on your provisioning workflow.

This document discusses how to deploy a web application using Docker containers. It provides an overview of Docker concepts like images, containers, and layers. It then shows the Dockerfile and configuration used to build images for a Bonami web application. It demonstrates deploying the images to servers using Fabric and managing the deployment with configuration files and hooks.

Despite advances in software design and static analysis techniques, software remains incredibly complicated and difficult to reason about. Understanding highly-concurrent, kernel-level, and intentionally-obfuscated programs are among the problem domains that spawned the field of dynamic program analysis. More than mere debuggers, the challenge of dynamic analysis tools is to be able record, analyze, and replay execution without sacrificing performance. This talk will provide an introduction to the dynamic analysis research space and hopefully inspire you to consider integrating these techniques into your own internal tools.

The document discusses design patterns for distributed non-relational databases, including consistent hashing for key placement, eventual consistency models, vector clocks for determining history, log-structured merge trees for storage layout, and gossip protocols for cluster management without a single point of failure. It raises questions to ask presenters about scalability, reliability, performance, consistency models, cluster management, data models, and real-life considerations for using such systems.

The document discusses various tools for profiling Python code such as cProfile, profile, hotshot, line profiler, and trace to identify inefficient code and bottlenecks. It covers using these tools to profile CPU and I/O bound problems as well as memory profiling issues. The document also demonstrates how to optimize code through caching, removing unnecessary function calls, and memoization.

This document provides an overview of a webinar on creating, editing, and using images in PowerPoint. The webinar will cover how to build an image from scratch in PowerPoint using drawing tools, create a collage image using an online tool called Picnik, add text and frames to images, change image layouts, and save final images. Resources for further learning are also listed.

SlideShare is a website that allows users to upload, view, and share presentation files. It can be accessed at http://www.slideshare.net, where users can search for presentations by topic, author, or category. To use SlideShare, one creates an account to log in, uploads presentation files, saves them, and then posts them to share. While it provides inspiration and easy viewing and sharing of presentations, SlideShare can also lead to viewing inappropriate content or wasting time browsing without direction.