1141
PostgreSQL High Availability Solutions – Part 1: Jepsen Test and Patroni
Note: code used in this article can be found on the Github repo jepsen-postgres-ha .
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 1,839 posts.
Infrastructure & DevOps
Any year
1142
Linux VM without VM software – User Mode Linux
Quick demonstration of using User Mode Linux (UML) to run a Linux VM inside Linux's userspace, without additional VM software or even root permissions
1143
Don't let event-driven architecture buzzwords fool you
I see a lot of new terms like Command-Event, Event-Based Compute, etc., presented around Event-Driven Architecture. Let me clear that up because there are no such things…
1144
I traced my traffic through a home Tailscale exit node
A practical deep dive into Tailscale exit nodes: route changes, traceroute evidence, DERP fallback, trust boundaries, and why this model can be free.
1145
1146
1147
Rainbow Deployments with Kubernetes
or: how you can deploy services to Kubernetes that require long periods of draining. #🌈 🌈 🌈 #If you want to jump directly to the technical solution, check out the project repo. Below is a short story about how we got to this solution.
1148
Running servers and services well is not trivial (2018)
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
1149
You can serve static data over HTTP
This will be short. I need to let some steam off and flush this thing out of my mind because it's already hanging around for too long. The story goes like this: we're prototyping small tool for whatever and we're at the point where there is a visible need to store some (most likely) static data. Oh, the thing is in…
1150
1151
1152
Untangling microservices, or balancing complexity in distributed systems
The microservices honeymoon period is over. Uber is refactoring thousands of microservices into a more manageable solution [1]; Kelsey Hightower is predicting monoliths are the future [2]; and even Sam Newman is declaring that microservices should never be the default choice, but rather a last resort [3]. What’s going…
1153
Cloud Traffic
I recently watched Build an enterprise-grade service mesh with Traffic Director , featuring Stewart Reichling and Kelsey Hightower of GCP, and of course Google Cloud’s Traffic Director . Coming at this with a brain steeped in 5½ years of AWS technology and culture was surprising in ways that seem worth sharing.
1154
Why Tarsnap won't use DynamoDB
As I've blogged about before, the Tarsnap server code synthesizes a log-structured filesystem on top of Amazon S3 . As a result of this design, for each block of data stored on Tarsnap, the server code needs to keep track of two key-value pairs: First, to map a 64-bit machine number and a 256-bit block ID to a 64-bit…
1155
When Every Network is 192.168.1.x
Solving the conflicting subnet problem with overlay addressing, WireGuard, and 1:1 NAT.
1156
1157
Azure cracks, AWS strong: Covid-19 stress-tests the cloud
The post analyzes how major cloud platforms are faring under pressure and usage spikes caused by COVID-19 during March 2020.
1158
Creating a Home IPv6 Network
One of the recent experiences of Linux Plumbers Conference convinced me that if you want to be part of a true open source WebRTC based peer to peer audio/video interaction, you need an internet address that’s not behind a NAT. In reality, the protocol still works as long as you can contact a stun server to tell you…
1159
1160
Launch a Debugging Terminal into GitHub Actions
Code, Apps and Thoughts @lawrencegripper
1161
Cron best practices
The time-based job scheduler cron(8) has been around since Version 7 Unix, and its crontab(5) syntax is familiar even for people who don’t do much Unix system administration. It’s standardised , reasonably flexible, simple to configure, and works reliably, and so it’s trusted by both system packages and users to…
1162
AWS EC2 Virtualization 2017: Including Nitro
AWS EC2 Virtualization 2017: explaining the different virtualization types, from emulation and binary substitution, paravirtualization and Xen, PV, HVM, and PVHVM modes, and the new Nitro hypervisor
1163
Dropping eBPF CPU Cost by About 90% with Memoization (Not AI Gen)
My brother and I spent a lot of time designing our eBPF security agent to be really fast from the ground up, but recently we discovered we could make it much faster using memoization! A couple of weeks ago, I profiled the eBPF code and found that the most expensive part of the protection isn’t actually enforcing a…
1164
1165
1166
Initial Impressions of WSL 2
Soon the Windows May 2020 Update (20H1) will be released upon the world. This update will contain some nice UI improvements, but most relevant to me it allows Web Developers on Windows to upgrade to WSL 2. This is a significant milestone in the #davegoeswindows saga and it’s worth posting about what it means going…
1167
Why cloud bandwidth is so obscenely expensive and what you can do about that
This article is an excerpt of my new book Cloudflare for Speed and Security where you will learn, among other things, how networking works in order to create fast, secure and scalable applications. If you are not overspending on compute (like many companies do because of "scale") then your biggest
1168
What is a 'unikernel'?
Learn what unikernels are, how they remove OS bloat between hardware and applications, and why they're gaining traction in cloud and microservices.
1169
How To: Hosting with Amazon S3, CloudFront and Route 53
How to host your static website like Jekyll with Amazon S3 static website hosting and CloudFront CDN. This will make your website much faster and more responsive to visitors all around the world.
1170
Downloading files from S3 with multithreading and Boto3
Yesterday I found myself googling how to do something that I’d think it was pretty standard: How to download multiple files from AWS S3 in parallel using Python? After not finding anything reliable in Stack Overflow, I went to the Boto3 documentation and started coding. Something I thought it would take me like 15…