J Fowler articles - 31 total
A Drum machine for iOS
Here's a fun project I did during some downtime. It's a midi drum machine for iOS using swift. The...
Store IoT device data
In a previous post, we showed how to receive iot device data from an MQTT broker. In this post, we...
Sending IoT Device Data via MQTT broker.
In a previous post, we showed how to send and receive messages from IoT devices using an MQTT broker....
A cluster-friendly MQTT Broker deployment with Docker
In this post, I show a docker deployment for an MQTT broker that will support adding multiple...
A simple MQTT application using Go
IoT devices promise to change the way we interact with the world around us. IoT enabled devices are...
A basic MQTT Docker deployment
In this post, I show how to setup a basic MQTT broker using the Eclipse Mosquitto MQTT broker using...
Getting a django shell from a Docker container
The Django shell is a powerful development tool. Comes in handy when you want to try operations...
On the 'throw it away' mentality in tech
William (Bill) Kennedy (@goinggodotnet) put up a real good post on X/Twitter addressing how AI can...
Useful Python Libraries for AI/ML
Here's a list of useful python libraries if you are working in ML pandas - The standard data...
Creating a Calculator app using React/Next
In this post, we will build a simple React app using Next.js. Nothing complicated, just a simple...
Implement an LRU Cache in Go
So you need a small cache and can't justify a Redis or memcached instance. Let's see what it takes to...
The Pipeline Pattern in Go
The pipeline pattern is a powerful way to process data through stages in a concurrent fashion. Each...
Fanout-Fanin Pattern in Go
In the previous 2 posts, we have looked at Fanout and Fanin separately. It is often the case that we...
Fanin Pattern in Go
Let's take a look at the fan-in pattern. This is really useful in go when we have related data from...
Fanout Pattern in Go
Let's take a quick look at the fanout pattern in Go. In general, fanout is used to perform a number...
Producer-Consumer Pattern in Go
In this post, Goroutines and channels are introduced. These are 2 of the most useful constructs in...
Counting Sort
Here's is sort algorithm to use for an array of integers or structures that are keyed by an integer....
Different deployment strategies
SO, you deployed a new feature and brought your service down. Beyond the usual questions regarding...
Remove Nth from end of linked list
In this post, I explore another linked list algorithm. This one is a bit harder. Create a function...
Detect cycle in linked list in Go
Another linked list algorithm. Detect a cycle in a linked list. This is actually not that bad....
Merge 2 sorted lists
Today, we look at another linked list task. Create a function to merge 2 sorted linked lists. The...
Reverse a linked list in go
This is a favorite question to give to new developers. Pretty simple if you have had a decent data...
Want to get started as a Data Engineer
Level Up Your Data Engineering Game! Get the Basics Down: Dive into data engineering...
Useful datasets for AI/ML
Looking for datasets for your next project. Here are some sources I...
Interface v.s. Functional Interface
For the Java crowd, here's one that some like to use. Explain the difference between an interface...
Best time to buy sell 1
Here we address the original best stock buy-sell question. Given an array of stock prices on...
Setting Expectations for your team
Let's be real – setting expectations for your team can be a bit of a minefield. You want to give them...
Find all palindromes in a string in Go
For this post, we're going to play with palindromes again but with a different technique. Write a...
Palindrome check a string in Go
This one is pretty common. Sounds difficult, but not really bad once you think it through. Write a...
Unique combinations of a string
This one is a little tricky and certainly depends on how one interprets the question. Write a...