#2 What I've learned
February 7, 2024
At my job, every engineer does customer support. You might think it’s a ...
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#1 What I've learned
February 1, 2024
Our work at PostHog is public, so it's pretty cool I get to share my recent ...
#34 Monitoring & logging
April 18, 2023
Now that our simulation is running, let's set up monitoring and logging to track ...
#33 Finalizing the simulation
March 27, 2023
Finally, the time has come to put all the components of our simulation together. ...
#32 Route planner
March 15, 2023
Now that a driver is matched with a customer, we need them to head to the ...
#31 Matching drivers with customers
March 10, 2023
The next step in our simulation is matching drivers with customers. There are ...
#30 Generating destinations
March 8, 2023
Previously, we added functionality for generating customer locations. This was ...
#29 Multiprocessing in Node.js
February 24, 2023
Here's one crucial thing to consider for our simulation. Every entity runs its ...
#28 Simulation engine
February 22, 2023
Today, we are starting to build the simulation engine. Let's see how it's going ...
#27 Animation fixes
February 17, 2023
A few issues with our animation code only became apparent after I started ...
#26 Server-generated data
February 16, 2023
Let's generate location updates on the backend and make them available to the ...
#25 Tidying up
February 14, 2023
We have iterated a fair bit on our project and a general structure is emerging ...
#24 Turning a car
February 8, 2023
The only thing our car animation needs are turns. Let's finish it up. A brief ...
#23 Moving a car
February 6, 2023
A car will move along a calculated path between the starting point and the ...
#22 Designing a car
February 3, 2023
Let's design a car icon we will place on the map. I used the amazing and free Ve ...
#21 Migrating to React
January 30, 2023
I started out writing the frontend application in vanilla Javascript. This was ...
#20 Docker Compose in production
January 26, 2023
There are a few more things we need to do to be able to run our app in ...
#19 Connecting two containers
January 25, 2023
There's an issue with our implementation from the last post. Have you spotted it ...
#18 Go: database connection
January 10, 2023
Let's connect our server to the database. First, let's add the postgres folder ...
#17 SQL setup
January 3, 2023
We will use PostgreSQL to persist the data on drivers, riders, and trips ...
#16 Docker in production
December 24, 2022
Let's now use Docker in production. Before we deploy our changes, we need to ...
#15 Setting up Docker
December 23, 2022
Today I was going to install an SQL database. It occurred to me that I would ...
#13 Building a graph
December 2, 2022
We need a data structure allowing us to move from point A to point B. This data ...
#12 Drawing a map
November 8, 2022
We need a map that will display all the action, such as routes requested, riders ...
#11 Improving deploys
November 7, 2022
The current deployment setup needs some work. First, we currently have to copy ...
#10 Serving a web page
November 3, 2022
Let's set up the serving of our app's frontend. First, let's change the domain ...
#9 Environment variables
October 23, 2022
Let's make our server aware of its environment. On our local machine, we want to ...
#8 HTTPS
October 22, 2022
Let's enable HTTPS on our server. This will encrypt the data coming from and to ...
#7 First deployment
October 21, 2022
Let's copy our server folder to our server at api.jurajmajerik.com. We can do ...
#6 HTTP server
October 19, 2022
We're going to use the native http module to set up our first endpoint. This is ...
#5 Installing Go
October 17, 2022
We'll be using the Go language for the backend code. Here I'll show how to ...
#4 Setting up SSH keys
October 17, 2022
Right now, we have to enter the password every time we log in to the server ...
#3 Users & privileges
October 16, 2022
The root user is an admin account - it is allowed to change any files in the ...
#2 Domain & DNS
October 15, 2022
Let's connect a domain to our server. This will save us from having to type the ...
#1 Setting up a server
October 14, 2022
Let's set up a server on Digital Ocean. For now, the cheapest option with 1 GiB ...
Building an Uber clone
October 13, 2022I'm fascinated by distributed systems and I'm going to learn about them by ...