Deprecated . This page was written for version 4 of the PageSpeed Insights API, which is deprecated and will be shut down in May 2019. Version 5 is the latest and provides both real-world data from th

When discussing the scalability of Web services there seems to be a tendency for some developers to overly focus on the framework being used, based on the mistaken assumption that smaller means faster

One of the questions we always get asked at meet-ups and conversations with other engineers is, “what’s your stack?” We thought it would be fun to give a sense of all the systems that power Instagram,

Jan 27, 2015 - Job van der Voort Working on an open source projects we receive many merge and pull requests and see a number of different git personalities. Do you recognize yourself? ← Back to insigh

Last week, I gave a talk at FITC SCREENS discussing GitHub for Designers. You can find the slides here . I thought it would be useful to distill the fundamentals – the most important part of my talk – down to a blog post. So here we are. Git is a tool for managing files – and changes to them. GitHub…

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has stored an exact copy of the source data. But we can still extract data from it. To do that, there’s a set of JSON operators to let us refer to elements within the JSON document. So say we just want the address section, we can do:

The six months rule Oct/01/2012 2 min read by Marco Monteiro Last week I had to make some changes into a really old project. The problem was: when I started, I didn’t remember how old the project real

You probably learned how to round numbers in middle school, maybe even in grade school. If you want to round 4.85 to 1 decimal place, you should have 4.9, right? Not if you are dealing with computers.

Table of Contents The following is a collaboration piece between Bobby Grayson , a software developer at Ahalogy , and Real Python. Remove ads Why Use Python for OCR? OCR (Optical Character Recognitio

A flag argument is a kind of function argument that tells the function to carry out a different operation depending on its value. Let's imagine we want to make booking for a concert. There are two way

Using SmartBear CodeCollaborator for lightweight code review Jason Cohen Published on January 25, 2011 Our team at SmartBear Software® has spent years researching existing code review studies and coll

Developing software often involves teams of people working together. As the team grows from one, to two, to multiple people, challenges begin to creep in and rob the organization of creative flow. It

“探索推荐引擎内部的秘密”系列将带领读者从浅入深的学习探索推荐引擎的机制，实现方法，其中还涉及一些基本的优化方法，例如聚类和分类的应用。同时在理论讲解的基础上，还会结合 Apache Mahout 介绍如何在大规模数据上实现各种推荐策略，进行策略优化，构建高效的推荐引擎的方法。本文作为这个系列的第一篇文章，将深入介绍推荐引擎的工作原理，和其中涉及的各种推荐机制，以及它们各自的优缺点和适用场景，帮助