Knowles was constantly in and out of prison for a major part of his life. He ended up in jail every time he committed an

On December 18, 1974, while being transported in a car by Sheriff Earl Lee and the Georgia Bureau of Investigation Agent Ronnie Angel, Knowles tried escaping from their clutches by wrestling Lee’s firearm away.,Cloning monorepos that have a lot of code and history is time consuming, and we need to do it frequently throughout the day in our continuous integration pipelines. For Pinboard alone, we do more than 60K git pulls on business days. Most of our Jenkins pipeline configuration scripts (written in Groovy) start with a “Checkout” stage where we clone the repository that the later stages will build and test. Here’s what a typical “Checkout” stage looks like:,Urvashi Reddy | Software Engineer, Engineering Productivity Team Adam Berry | Tech Lead, Engineering Productivity Team Rui Li | Software Engineer, Engineering Productivity Team,Tortured, Starved, Abused: The Disabled People Imprisoned in Philadelphia ‘Linda Ann Weston’ the accused who left no stone unturned to make their life miserable.medium.com,All our larger efforts are designed to progress on the goal of making software development and delivery at Pinterest a fast and painless experience. Recently, we were reminded of how small details can also have a large impact on that goal. We discovered an overlooked Git option that significantly reduced the build times in our continuous integration pipelines. In order to understand how this small change had such a large impact, we need to share a little information on our monorepos and our pipelines.,Tortured, Starved, Abused: The Disabled People Imprisoned in Philadelphia ‘Linda Ann Weston’ the accused who left no stone unturned to make their life miserable.medium.com,The Engineering Productivity team at Pinterest is responsible for supporting the engineers who build and deploy software at the company. Our team maintains a number of infrastructure services and often works on large scale efforts — migrating all software at Pinterest to Bazel, creating a Continuous Delivery platform called Hermez, and maintaining the monorepos that get committed to a few hundred times a day, to name a few.,The Engineering Productivity team at Pinterest came across a small change that had a large impact in reducing build times across pipelines. We found that setting the refspec option during git fetch reduced our cloning step by 99%.,On a particularly lonely Saturday night, triggered by a friend’s quarantine engagement, I opened my favorite dating app. (This is much like having a favorite dental floss; sure, technically I have a preference, but it in no way makes the task more enjoyable.) I was surprised to see so many profiles updated to include mentions of antibodies and socially distanced dates. While my Instagram feed was evidence enough that millennials were largely ignoring stay-at-home orders, I didn’t assume that necessarily translated into dating. While I doubted their motivations were romantic (were they ever), I was still excited to see so many eligible bachelors within my zip code.,We have six main repositories at Pinterest: Pinboard, Optimus, Cosmos, Magnus, iOS, and Android. Each one is a monorepo and houses a large collection of language-specific services. Pinboard is as old as the company and is the largest monorepo. Pinboard has more than 350K commits and is 20GB in size when cloned fully.,This simple one line change reduced our clone times by 99% and significantly reduced our build times as a result. Cloning our largest repo, Pinboard went from 40 minutes to 30 seconds. It goes to show that sometimes our small efforts can have a big impact as well.,“The Casanova Killer had no compunction about killing you, makes no difference whether he strangled you, whether he shot you, whether he stabbed you or what. He was a martial arts expert. He was tough. He was mean.”,Even though we’re telling Git to do a shallow clone, to not fetch any tags, and to fetch the last 50 commits, we’re still not running this operation as fast as we could be. That’s because we aren’t setting the refspec option. Notice that by not setting it in the pipeline configuration script, we’re telling Git to fetch all refspecs: refs/heads/*:refs/remotes/origin/*. In the case of Pinboard, that operation would be fetching more than 2,500 branches.,In the subsequent manhunts, Knowles roamed through woods, swampland, and avoided the police, the hunting dogs, and the helicopters searching him. Eventually, he was captured by a civilian: A Vietnam veteran armed with a shotgun. He tried escaping and denied confinement.,By simply adding the refspec option and specifying which refs we care about (master, in our case), we can limit the refs to the branch we care about and save a lot of time. Here’s what that looks like in our pipeline code: