---
title: "Issue 82: The latest Web operations, scaling, and performance news"
publication: "StatusCode Weekly"
issue: 82
published_at: "2016-09-07"
canonical_url: "https://weekly.statuscode.com/issues/82"
---

WebOps Weekly 82   . 

The latest Web operations, HTTP, and Web performance news -[Read this on the Web](http://webopsweekly.com/issues/82) 

[![WebOps Weekly\](http://webopsweekly.com/images/webops-header.png)](http://webopsweekly.com) Issue 82 — September 7, 2016     

[TLS Stats From 1.6 Billion Connections to Mozilla.org](https://jve.linuxwall.info/blog/index.php?post/2016/08/04/TLS-stats-from-1.6-billion-connections-to-mozilla.org=&utm_source=webopsweekly&utm_medium=email) news Mozilla.org is a good target to evaluate client diversity because it receives traffic from all sorts of devices from all over the world. Julien Vehent [Insomnia: A Good Looking REST Client for Mac, Windows and Linux](https://insomnia.rest/?utm_source=webopsweekly&utm_medium=email) tools A simple yet powerful REST API Client with cookie management, environment variables, code generation, and authentication. Not open source but currently free. GetInsomnia [Analyze a Site's Security with Mozilla's 'HTTP Observatory'](https://observatory.mozilla.org/?utm_source=webopsweekly&utm_medium=email) tools A set of tools to analyze your website and inform you if you’re using some of the many available methods to secure it. [Code here.](https://github.com/mozilla/http-observatory) Mozilla [Learn Modern Asynchronous Programming w/ Jed Borovik](https://forwardcourses.com/workshops/1) Learn from Google and Flipboard alum Jed Borovik how callbacks interact with the event loop, implement your own generator-based control flow library, and see how to use ES7 async functions. Use "weekly2016" for 30% off Forward Coursessponsored[![\](https://copm.s3.amazonaws.com/0d504a2a.png)](https://forwardcourses.com/workshops/1) [Serving The Web At Light-Speed: A 3 Part Series](http://romain.dorgueil.net/blog/en/web-performance/2016/09/06/1-light-speed-web-performance.html?utm_source=webopsweekly&utm_medium=email) tutorial The first in a series looking at tools and techniques to optimize your website for load speed. Romain Dorgueil [Is HTTP Public Key Pinning 'Dead'?](https://blog.qualys.com/ssllabs/2016/09/06/is-http-public-key-pinning-dead?utm_source=webopsweekly&utm_medium=email) opinion “I fear that HTTP Public Key Pinning — a standard that was intended to bring public key pinning to the masses—might be dead.” Ivan Ristic [Speed Monitor: Website Performance Reports Sent to Slack](https://github.com/jacted/speed-monitor?utm_source=webopsweekly&utm_medium=email) tools Uses the client-side [Navigation Timing API](https://developer.mozilla.org/en/docs/Web/API/Navigation_timing_API) and a script to send results to your Slack channel of choice. Jacob X [GoReplay: Test Your System with Real Data](https://goreplay.org/?utm_source=webopsweekly&utm_medium=email) tools A ‘swiss army knife’ for testing web apps. Install GoReplay, ‘record’ your app’s traffic, then replay it later when testing/debugging. Leonid Bugaev [Chrome Intervening Against 'document.write()'](https://developers.google.com/web/updates/2016/08/removing-document-write?utm_source=webopsweekly&utm_medium=email) tutorial Under certain circumstances, Chrome is blocking some external scripts that are using document.write() to improve performance. Paul Kinlan Jobs [WebOps Engineer](https://www.datadoghq.com/careers/detail/?gh_jid=264713) Do you want to be part of one of NYC’s top enterprise startups? Datadog is growing fast, and we’re hiring a Web Ops Engineer to oversee our corporate sites. Datadog [Stop Applying to Jobs - Let Companies Come To You](https://hired.com/?utm_source=newsletters&utm_medium=petercooperpress&utm_campaign=q3-16-webopsweekly) On Hired, engineers typically get 5+ job offers in 1 week. Find that new opportunity you've been craving and get access to 4,000+ companies instantly. Hired.​com In brief [Container Camp UK - September 9th, 2016 (London, UK)](https://container.camp/uk/2016/?utm_source=webopsweekly&utm_medium=email) news A community conference on the future of containers. Use `WEBOPSCAMP` for £100 off. Container Camp [Implementing a Serverless AWS IoT Backend with AWS Lambda and DynamoDB](https://aws.amazon.com/blogs/compute/implementing-a-serverless-aws-iot-backend-with-aws-lambda-and-amazon-dynamodb/?utm_source=webopsweekly&utm_medium=email) tutorial Amazon [A Technical DNS Primer](https://danielmiessler.com/study/dns/?utm_source=webopsweekly&utm_medium=email) tutorial Daniel Miessler [Waterfall Analysis: Digging Into Your Pingdom Requests](https://kinsta.com/blog/waterfall-analysis/?utm_source=webopsweekly&utm_medium=email) tutorial An indepth guide to optimizing WordPress with waterfall analysis if you use Pingdom. Brian Jackson [Monitoring and Tuning the Linux Networking Stack: Receiving Data](http://blog.packagecloud.io/eng/2016/06/22/monitoring-tuning-linux-networking-stack-receiving-data/?utm_source=webopsweekly&utm_medium=email) tutorial Sounds a bit dry but is ultimately a very thorough in-depth guide to how the Linux kernel receives packets. PackageCloud [Free eBook: Intro to Docker Plugins](https://resources.codeship.com/ebooks/docker-plugins/?utm_source=webopsweeklysecondary) tutorial This free eBook will help you to get started creating Docker plugins with capabilities such as Authorization (Authz), VolumeDriver, NetworkDriver, and IpamDriver. Codeshipsponsored [Debugging Why 'ping' Was Broken in Docker Images](https://www.cyphar.com/blog/post/docker-broken-ping?utm_source=webopsweekly&utm_medium=email) story Aleksa Sarai [How Elixir Helped Scale A Video User Profile Service for The Olympics](https://medium.com/software-sandwich/how-elixir-helped-us-to-scale-our-video-user-profile-service-for-the-olympics-dd7fbba1ad4e?utm_source=webopsweekly&utm_medium=email) story Elixir is an Erlang-based language with Ruby-esque syntax. Emerson Macedo [Stripping JPEG Metadata for Faster Images](https://blog.dexecure.com/impact-of-metadata-on-image-performance/?utm_source=webopsweekly&utm_medium=email) story JPEG images can store a lot of metadata. Inian Parameshwaran [Buildkite: Post-Mortem and Lessons Learned After Outage](https://building.buildkite.com/outage-post-mortem-for-august-23rd-82b619a3679b?utm_source=webopsweekly&utm_medium=email) story A very honest play-by-play of a major outage. Keith Pitt [Breaking In to a Hardened Server via the Back Door](http://polynome.co/infosec/inversoft/elasticsearch/linode/penetration-testing/2016/08/16/hack-that-inversoft.html?utm_source=webopsweekly&utm_medium=email) story Bradley Buda [A Simple Introduction to Microservices](https://medium.com/flow-ci/a-simple-introduction-to-microservices-a69446d2c211?utm_source=webopsweekly&utm_medium=email) story flow.​ci [Find and Fix App Errors Faster (and have fun doing it)](https://rollbar.com/?utm_source=webopsweekly&utm_medium=email-nl&utm_term=webopsweekly_9_7&utm_campaign=nl_sponsorship) tools Quickly pinpoint what’s broken and why. Get the context and insights to defeat all software application errors. ROLLBARsponsored [AWS SDK for C++ Now Ready for Production Use](https://aws.amazon.com/blogs/aws/aws-sdk-for-c-now-ready-for-production-use/?utm_source=webopsweekly&utm_medium=email) tools Amazon [OARC's Open DNS Privacy Resolver Testbed](https://www.dns-oarc.net/oarc/services/dnsprivacy?utm_source=webopsweekly&utm_medium=email) tools Want to test DNS over TLS? Here are two resolvers you can use. OARC [mylg: A Network Diagnostic Tool](https://github.com/mehrdadrad/mylg?utm_source=webopsweekly&utm_medium=email) tools ping, trace, packet analysis, RIPE info, LAN discovery, and more in a single command line tool. Mehrdad Arshad Rad [ZoneMTA: Modern Outbound SMTP Relay Built on Node.js and LevelDB](https://github.com/zone-eu/zone-mta?utm_source=webopsweekly&utm_medium=email) code Still a work in progress. Zone.​eu    [Read this issue on the Web](http://webopsweekly.com/issues/82) [See our archives](http://webopsweekly.com/issues) [Change your email address](*|UPDATE_PROFILE|*)  [Stop getting this newsletter](*|UNSUB|*)  

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