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AWS Lambda Cold Start Language Comparisons, 2019 edition ☃️
It’s 2019, the worlds a changing place but the biggest question of them all is how have lambdas performance changed since 2018? I’m here again to compare the cold start time of competing languages…
computers  programming  aws  cloudcomputing  devops  serverless  node.js  python  ruby  golang  java 
6 weeks ago by pozorvlak
Launch Darkly for serverless - Google Docs
As expected, best results are achieved with the Redis cache. Interesting that, for the cold start, using DynamoDB performs worse than without AWS caching.
computers  programming  devops  cloudcomputing  aws  serverless 
6 weeks ago by pozorvlak and Ruby
Use's Ruby library to track usage patterns within a Rails application.
computers  programming  ruby  observability  rails  devops 
7 weeks ago by pozorvlak
AWS Step Functions — The Power of Simplicity - WeAreServian - Medium
Since its introduction to the AWS ecosystem in late 2016 at AWS re:Invent conference, Step Functions have changed the way organisations execute a wide variety of tasks. I am going to claim in…
computers  programming  devops  cloudcomputing  amazon  aws 
7 weeks ago by pozorvlak
Testing and Environment Variables
Learn how to test code using data in environment variables with Climate Control.
computers  programming  testing  ruby  devops  rails 
8 weeks ago by pozorvlak
Everything You Know About Latency Is Wrong – Brave New Geek
Gil walks through a simple, hypothetical example: a typical user session involves five page loads, averaging 40 resources per page. How many users will not experience something worse than the 95th percentile? 0.003%. By looking at the 95th percentile, you’re looking at a number which is relevant to 0.003% of your users. This means 99.997% of your users are going to see worse than this number, so why are you even looking at it?
To understand latency, you have to consider ...
computers  devops  web  dataviz  statistics  optimization  distributedsystems 
january 2020 by pozorvlak
A Dropbox account gave me stomach ulcers : sysadmin
r/sysadmin: A reddit dedicated to the profession of Computer System Administration.
computers  programming  devops  techindustry  cloudcomputing  WTF  security  infosec 
december 2019 by pozorvlak
How to fuck up software releases | Drew DeVault’s Blog
I manage releases for a bunch of free & open-source software. Just about every time I ship a release, I find a novel way to fuck it up. Enough of these fuck-ups have accumulated now that I wanted to share some of my mistakes and how I (try to) prevent them from happening twice.
computers  programming  devops  opensource 
october 2019 by pozorvlak
GitHub - cmeiklejohn/kubernetes-hello-world-example: Adapted from the Google Cloud Provider tutorial for Google Kubernetes Engine.
Adapted from the Google Cloud Provider tutorial for Google Kubernetes Engine. - cmeiklejohn/kubernetes-hello-world-example
computers  programming  devops  docker  kubernetes 
october 2019 by pozorvlak
Why Does Developing on Kubernetes Suck? | Tilt Blog
Kubernetes has changed the way I operate software. Whole classes of production problems have disappeared–, arguably to be replaced by others. But such is the way of the world. All told I’m happier operating a microservices app today than I was before I started using Kubernetes.
computers  programming  docker  kubernetes  debugging  networking  devops 
august 2019 by pozorvlak
argoproj/argo: Argo Workflows: Get stuff done with Kubernetes.
Argo Workflows: Get stuff done with Kubernetes. Contribute to argoproj/argo development by creating an account on GitHub.
computers  programming  docker  machinelearning  kubernetes  devops 
august 2019 by pozorvlak
Run less software | Inside Intercom
Choose standard technology
Outsource undifferentiated heavy lifting
Create enduring competitive advantage
computers  programming  devops  startups  techindustry 
august 2019 by pozorvlak
RT : Unresponsive backend Linux app server: 503 Service Unavailable.
sysadmin  devops 
june 2019 by pozorvlak
Valuable Lessons in Over-Engineering the Core of Kubernetes kops, Kris Nova
They turned 1,000 lines of YAML into 10 Go structs. They wrote real tests that exercised real code. They deleted entire packages.

They removed a lot of complexity, which was getting in the way of not just technical progress, but also community development. People started saying, "I get kops now. I want to help. How do I contribute?" kops development became exciting again.
computers  programming  devops  kubernetes  opensource 
june 2019 by pozorvlak
Incidents — Trends from the Trenches – Subbu’s Blog
Most publicized production incidents are war stories. Each involves drama with dead ends, twists and turns, and a victory at the end. Something innocuous happens, that then snowballs across several…
devops  computers  distributedsystems 
june 2019 by pozorvlak
Skycfg Is Fun!
Python-based configuration language.
computers  programming  devops  python  kubernetes 
april 2019 by pozorvlak
How Pinterest runs Kafka at scale – Pinterest Engineering – Medium
Pinterest runs one of the largest Kafka deployments in the cloud. We use Apache Kafka extensively as a message bus to transport data and to power real-time streaming services, ultimately helping more…
kafka  computers  bigdata  scaling  devops 
march 2019 by pozorvlak
Charity Majors on Twitter: "Then they hear they should structure their logs, so they add structure to their existing shitty logs, which adds a few bytes, and then wonder why they aren't getting any benefit -- just paying more. You need a fundamentally dif
The basics of design for observability:
- log a single structured event per service hop
- stuff anything you can think of into it (hundreds of dimensions)
- IDs are particularly useful
- keep a weighted sample of these events to control costs
- you can derive metrics and aggregates from events, but not the other way round
- don't log strings randomly throughout your code
devops  computers  distributedsystems  debugging  observability 
september 2018 by pozorvlak
Why we use Terraform and not Chef, Puppet, Ansible, SaltStack, or CloudFormation
Update, November 17, 2016: We took this blog post series, expanded it, and turned it into a book called Terraform: Up & Running! Update, July 8, 2019: We’ve updated this blog post series for…
computers  devops  cloudcomputing 
september 2018 by pozorvlak
Charity Majors on Twitter: "The end. Here is the excellent TLDR which I heartily endorse every inch of. (@lyddonb if you DM your address and shirt size i will send you an "I TEST IN PROD" t-shirt. thank you for this talk!)…"
- Pass a context
- Structure your logs
- Create a data pipeline
- Structure all system data and pass to pipeline
- Minimize, track and build visualizations for dependencies
- Leverage service meshes
- Distributed tracing
- Support NoOp, experimentation, simulation in production
- Then kill as many non-production environments as possible
devops  computers  distributedsystems 
august 2018 by pozorvlak
The History of Fire Escapes
What can software learn from the history of fire escapes in New York City? Turns out, we're following a similar evolution. This was a keynote for QCon 2018.
computers  safety  devops  newyork  fire  disaster  history 
august 2018 by pozorvlak
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