Flickr Services

Apache is the most popular web server in the world, yet its default configuration can't handle high traffic. Learn how to setup Apache for high performance sites and leverage many of its available modules to deliver a faster web experience for your users. Discover how Apache can max out a 1 Gbps NIC and how to serve over 140,000 pages per minute with a small Apache cluster. This presentation was given by Spark::red's founding partner Devon Hillard in March 2012 at the Boston Web Performance Meetup.

Optimizing the performance of WordPress by Josh Highland of NewLeaf Labs. Presentation was given at Orange County WordCamp 2011

Amazon CloudFront and Amazon Route 53 can help optimize web application performance and availability. CloudFront improves performance by caching static and reusable content at edge locations and optimizing delivery of dynamic content through features like keep-alive connections and latency-based routing. Route 53 provides fast, reliable DNS services and can health check origins to improve high availability. Together, CloudFront and Route 53 provide a global network that caches content close to users and routes traffic based on network conditions to optimize performance and design for failure.

Mike Creuzer's presentation on LAMP optimization for the October, 2009 meeting of the Suburban Chicago PHP & Web Development Meetup

Traditionally, content delivery networks (CDNs) were known to accelerate static content. Amazon CloudFront has come a long way and now supports delivery of entire websites that include dynamic and static content. In this session, we introduce you to CloudFront’s dynamic delivery features that help improve the performance, scalability, and availability of your website while helping you lower your costs. We talk about architectural patterns such as SSL termination, close proximity connection termination, origin offload with keep-alive connections, and last-mile latency improvement. Also learn how to take advantage of Amazon Route 53's health check, automatic failover, and latency-based routing to build highly available web apps on AWS.

This document provides information on improving Drupal performance through various techniques including performance testing, caching, optimizing database and server configurations, using tools like Varnish, load balancers, and CDNs, and addressing inefficient code. It also discusses a case study of using scalable cloud hosting and caching strategies to handle peak traffic for a site during major awards events.

This document discusses using ElastiCache for Redis in production. It begins with an introduction to the author and their role at gumi Inc. It then provides an overview of Redis operations and data persistence methods. The document outlines gumi's migration from memcached to Redis, including their use of master-slave replication and multiple databases. It notes potential issues with ElastiCache for Redis like lack of auto failover and inability to change instance types. In summary, while some features are still missing, ElastiCache for Redis allows quick node provisioning and has proven reliable for gumi despite initial function gaps.

The document discusses building highly scalable web APIs. It proposes moving to an asynchronous architecture using event-driven frameworks like gevent. This allows decoupling requests from backend resources to avoid failures under load. The architecture incorporates authentication, throttling to delay requests if needed, and selectively dropping requests to prevent failures. The goal is graceful degradation, with the ability to service most requests during spikes rather than having the entire API become unavailable.

Traditionally, content delivery networks (CDNs) were known to accelerate static content. Amazon CloudFront has come a long way and now supports delivery of entire websites that include dynamic and static content. In this session, we introduce you to CloudFront dynamic delivery features that help improve the performance, scalability and availability of your website, while helping you lower your costs. In this session we will talk about architectural patterns such as SSL termination, close proximity connection termination, origin offload with keep-alive connections and last-mile latency improvement. You will also learn how to take advantage of Amazon Route 53 health check, automatic failover and latency-based routing to build highly available web apps on AWS.

A document about queues discusses what queues are, why they are used, common use cases, implementation patterns, protocols, considerations when implementing queues, and how to handle issues that may arise. Queues act as buffers that allow different applications or systems to communicate asynchronously by passing messages. They help decouple components, distribute load, and improve reliability and user experience. Common examples of messages that may be queued include emails, images, videos, and IoT data.

In this session, we'll discuss architectural, design and tuning best practices for building rock solid and scalable Alfresco Solutions. We'll cover the typical use cases for highly scalable Alfresco solutions, like massive injection and high concurrency, also introducing 3.3 and 3.4 Transfer / Replication services for building complex high availability enterprise architectures.

Shopzilla redesigned their architecture to improve performance and scalability. The new design simplified layers, utilized caching extensively, and applied best practices for front-end performance. This led to significant business benefits including a 7-12% increase in conversion rates, 8-120% increase in search engine sessions, and a 225% increase in development velocity. Performance testing was a key part of the new approach.

Whether you’re running a simple website, a mobile app, or a suite of business applications, DNS is a fundamental part of any architecture in the cloud. In this mid-level architecture session, we’ll cover everything you need to get started with Amazon Route 53, AWS’s highly-available DNS service. You’ll learn how to use public DNS, including routing techniques such as weighted round-robin, latency-based routing, and geo DNS; how to configure DNS failover using health checks; how and when to use private DNS within your Virtual Private Cloud (VPC); and how Amazon Route 53 interacts with Amazon EC2’s DNS for instance naming and DNS resolution across your network. We will conclude the session with a real-world migration example. Warner Bros. Entertainment recently completed a full DNS migration to Route 53. Vahram Sukyas, Vice President, Application Infrastructure & Operations at Warner Bros. Entertainment, will share details on his team's architecture, migration strategy, and lessons learned which are useful for enterprises and startups alike.

The document discusses using MongoDB as a scalable storage solution for Adobe Experience Manager (AEM). It introduces MongoDB and the MongoMK storage component that allows AEM to use MongoDB. The rest of the document covers best practices for sizing, deploying, and operating an AEM and MongoDB configuration including considerations for availability, volume, working set, latency, deployment automation, and operational monitoring.

This document provides an introduction to web applications, outlining key concepts like client-server communication using HTTP, static websites served from web servers, dynamic content through client-side scripts, and full-fledged web applications running on application servers using server-side scripts. It explains how static files are directly served to clients, while dynamic requests trigger script interpretation or program execution to generate responses. Modern application servers like Tomcat use Java to compile scripts for high performance and prevent crashes through the virtual machine.

Sizing an alfresco infrastructure has always been an interesting topic with lots of unrevealed questions. There is no perfect formula that can accurately define what is the perfect sizing for your architecture considering your use case. However, we can provide you with valuable guidance on how to size your Alfresco solution, by asking the right questions, collecting the right numbers, and taking the right assumptions on a very interesting sizing exercise. How many alfresco servers will you need on your alfresco cluster? How many CPUs/cores do you need on those servers to handle your estimated user concurrency? How do you estimate the sizing and growth of your storage? How much memory do you need on your Solr servers? How many Solr servers do you need to get the response times you require? What are the golden rules that can drive and maintain the success of an Alfresco project?

Peek behind the scenes to learn about Amazon ElastiCache's design and architecture. See common design patterns of our Memcached and Redis offerings and how customers have used them for in-memory operations and achieved improved latency and throughput for applications. During this session, we review best practices, design patterns, and anti-patterns related to Amazon ElastiCache.

Synchronous Reads, Asynchronous Writes refers to an architectural approach where data reads are performed synchronously through services, while data writes are performed asynchronously through a messaging system. This allows for decoupling of services, horizontal scaling of reads and writes, and loose coupling between systems. The key aspects are performing JSON RESTful reads through services like Sinatra, and pushing writes to a messaging system like RabbitMQ with routing keys to trigger downstream processing. This approach can help solve issues with monolithic Rails applications that do not scale effectively.

Namshi is an e-commerce company based in Dubai that has grown to over 250 employees and serves millions of visitors per month. Originally using a monolithic PHP architecture, they migrated to a microservices architecture using PHP, Node.js, RabbitMQ, and other tools to improve scalability, deployability, and maintainability. This involved breaking the monolith into independent services, implementing an event-driven messaging system, and building new frontends using JavaScript.

1) Flickr is a photo sharing website built using PHP that allows users to upload and tag photos and share them publicly or privately. 2) The website uses a logical architecture with application logic, page logic, templates, and endpoints separating the different components. 3) While primarily built with PHP, the website also incorporates technologies like Smarty for templating, Perl for image processing, MySQL for the database, and Java for the node service.

This document summarizes Flickr's architecture and use of PHP. [1] Flickr uses PHP for its application logic and templating, with Smarty templating and PEAR libraries. [2] The logical architecture includes photo storage, databases, node services, application logic, page/API logic, and templates/endpoints. [3] PHP allowed Flickr to scale horizontally by making the application stateless and storing all data in databases.

The document discusses Flickr and web services. It describes Flickr as a photo-sharing website and application with an open API. It then discusses different types of web service transports including SOAP, XML-RPC, and REST. It notes that services should support multiple transports and cautions about potential performance issues from API abuse.

The document discusses Flickr and web services. It describes Flickr as a photo-sharing website and application with an open API. It then discusses different types of web service transports including SOAP, XML-RPC, and REST. The document cautions that performance problems can occur if APIs are abused, such as through excessive scraping or polling, and recommends solutions like caching and monitoring.

This document discusses Namshi's transition from a monolithic PHP architecture to a microservices architecture using PHP, Node.js, and other technologies. Some of the benefits realized include improved scalability, deployability, and maintainability. Key aspects covered include the use of service-oriented architecture with independent services, HTTP as the communication protocol, RabbitMQ for messaging, and PHP frameworks like Silex for building APIs. The new architecture also aims to be stateless, using JSON Web Tokens for authentication.

The document discusses web servers, web browsers, and how they communicate via HTTP. It explains that the browser makes requests to the server, and the server responds by sending back content like HTML pages, images, and other resources. It also provides details on HTTP methods like GET and POST, and how browsers use HTML and CSS to render and display web pages for users.

Slides for a presentation I gave on May 4, 2011 at the GTA PHP user's group (http://meetup.gtaphp.org) about components for modern PHP application stacks

The Ruby ecosystem is pretty awesome when it comes to developing or consuming HTTP APIs. On the publishing front, the Rails framework is an attractive option because it supports publishing what are popularly (but inaccurately) referred to as 'RESTful' APIs quickly and effortlessly. On the consumer side, the Ruby ecosystem provides several very fluent and powerful libraries that make it easy to consume HTTP based APIs. Since a significant proportion of projects today require that APIs be both published and consumed, many of them wind up choosing Ruby as a platform for the reasons mentioned above. This talk is targeted at folks that are currently on such projects, or anticipate being on such projects in the future. We will cover: Consuming HTTP APIs: 1) The basics of making HTTP calls with Ruby 2) The strengths and weaknesses of Ruby's Net::HTTP across 1.8, 1.9 and JRuby (possibly Rubinius if we have the time to do research) 3) Popular HTTP libraries that either make it easier to do HTTP by providing better APIs, make it faster by using libCurl or both 4) Different approaches to deserializing popular encoding formats such as XML and JSON and the pitfalls thereof Producing HTTP APIs using Rails: 1) The basics of REST 2) What Rails gives you out of the box - content-type negotiation, deserialization etc. and the limitations thereof 3) What Rails fails to give you out of the box - hypermedia controls etc. 4) What Rails does wrong - wrong PUT semantics, no support for PATCH, error handling results in responses that violate the clients Accepts header constraints etc. 4) How one can achieve Level 2 on the Richardson Maturity Model of REST using Rails 5) Writing tests for all of this At the end of this, our audience will understand how you can both consume and produce HTTP APIs in the Ruby ecosystem. They will also have a clear idea of what the limitations of such systems are and what the can do to work around the limitations.

A talk I gave at Codebits 2011. You can find the video here: https://codebits.eu/intra/s/session/204 Abstract: There's an abundance of talks about developing for the web. Most of it targeted to developing mass-market websites, worrying about CDNs, SEO, bookmarks, progressive enhancement, etc. But what if you want to build fullblown applications that just happen to be implemented in web technologies? Web apps, especially single-page, highly interactive ones, have some special characteristics. For a long time we've been implementing web apps as if the browser was a mostly dumb terminal, and instead kept most of the logic on the server. Even current favorits like RoR or GWT keep to that old paradigm. We'll see how we can take a REST architecture, combining it with a good dose of javascript MVP to create applications that are much closer, both in structure and in functionality, to desktop apps than to normal webpages. By fully embracing web technology, instead of "hiding" behind some leaky abstractions, we'll be set free to take our apps to the next level. And we'll see how much nicer they are to develop.

- Flickr uses PHP for its page and application logic, along with technologies like Smarty, PEAR, Perl, and Java. The site has over 60,000 lines of PHP code and templates. - The logical architecture includes page logic, application logic, photo storage, APIs, templates, third-party apps. The physical architecture includes static servers, database servers, and node servers. - PHP is used for page and application logic. Smarty is used for templating. MySQL is used for storage. Java is used in the node service. Flickr scales horizontally by adding more hardware over time.

This document provides an overview of the IT3101 Web-based Database Development course. The course aims to teach theoretical and practical skills for developing web-based database systems using PHP, MYSQL and SQL. The course content is divided into three parts that cover working with MySQL, working with PHP, and building simple applications. Key topics include an introduction to client-side and server-side scripting, learning PHP syntax and functions, interacting with MySQL databases, and putting the skills to use through sample projects.

This document discusses optimizing APIs for mobile devices. It notes that mobile devices and networks are slower than servers, so APIs need to be optimized for these constraints. It recommends transforming data to more efficient formats like JSON, offering partial responses, enabling compression, implementing caching across a content delivery network, and being judicious about the amount of data returned to improve performance for mobile clients. The overall message is that APIs need to be designed with the limitations of mobile in mind.

This talk gives an overview of CMIS and the Alfresco API. Originally presented at GlueCon 2013 and updated for Alfresco Day Sydney in August of 2013.

The document provides an overview of the LAMP web development stack, which consists of Linux as the operating system, Apache as the web server, MySQL as the database management system, and PHP as the programming language. It discusses each component, their history, features, and how they work together to provide a free and open-source alternative to proprietary web development platforms.

The break command is used to skip the current iteration of a loop and move on to the next one.

MuleSoft Interview Questions and answers from youtube channel Techlightning https://www.youtube.com/watch?v=JqBgT2t6cCQ&list=PLfEAetjBY9s4YdBie3VSpufxNcnC3wJvK

This document discusses issues a mobile developer named Sara had with her company's backend team. Some key problems Sara faced included: changes to the backend breaking features in her app; inconsistencies in API data formats, JSON structure, and status codes; and lack of navigation links and proper documentation for the API. The document then provides recommendations for the backend team to improve the API, such as implementing versioning, following hypermedia constraints, maintaining consistency in data formats and structures, and thoroughly documenting the API.

The document discusses sending emails using PHP. It provides the syntax for PHP's mail() function, including required and optional parameters. It then gives an example of sending a simple text email. It also demonstrates how to create an HTML form that sends email input to a specified address. Finally, it provides an overview of different types of web services (SOAP, XML-RPC, REST), their advantages and disadvantages, and reasons for using web services.

The document summarizes a presentation given by Amr Awadallah of Cloudera on Hadoop. It discusses how current storage systems are unable to perform computation, and how Hadoop addresses this through its marriage of HDFS for scalable storage and MapReduce for distributed processing. It provides an overview of Hadoop's history and design principles such as managing itself, scaling performance linearly, and moving computation to data.

Facebooks Petabyte Scale Data Warehouse using Hive and Hadoop. More info here http://www.royans.net/arch/hive-facebook/

Grid computing provides a distributed computing platform that allows resources to be shared and utilized across organizational boundaries at scale. It abstracts applications and services from underlying infrastructure through virtualization, automation, and service-oriented architectures. While grid adoption began in scientific and technical fields, grids are now being used in commercial enterprises for shared infrastructures, regional collaborations, and emerging "cloud" utility providers. Widespread adoption of grid computing will require addressing social and standards barriers as grids move from early deployments to broader use across different industries.

Are you pushing the envelope of what your web application can handle? Do your engineers feel the impending need to overhaul and retrofit your system before it unexpectedly keels over on you? Come hear Six Apart talk about the tools, software and most importantly, the process it has been using to completely rewrite the backend of TypePad without disrupting thousands of users and paying customers.

This document summarizes Dan Kaminsky's 2007 talk at Black Hat about exploiting vulnerabilities in the DNS system and web browser security policies to enable arbitrary TCP and UDP access from within a web browser. Kaminsky describes how controlling DNS responses allows an attacker to bypass firewalls and access internal networks by manipulating the browser's view of domain names and IP addresses. He then outlines his proof-of-concept attack software called "Slirpie" that implements a VPN-like tunnel using only a compromised web browser.