Shalvah

Builder, explorer, writer. APIs, dev tools, automation. Advocate of simple design.

Lagos, Nigeria Joined on Jan 2, 2018 http://shalvah.me

Work

Software Engineer

PHP, JavaScript

Ruby

63 posts published

129 comments written

6 tags followed

Shalvah

Sep 11

Exploring concurrent rate limiters, mutexes, semaphores

#concurrency #ruby #datastores

11 min read

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Shalvah

Aug 13

High and low cardinality

#engineeringconcepts #data

4 min read

Shalvah

Jul 22

Packing and unpacking bytes

#data #encoding

5 min read

Shalvah

Jul 2

Building a PHP client for Faktory, Part 5: Protocol

#queues #php

4 min read

Shalvah

May 7

Building a PHP client for Faktory, Part 4: Refactoring

#queues #php

6 min read

Shalvah

Apr 23

Building a PHP client for Faktory, Part 3: Making development easier

#queues #php

5 min read

Shalvah

Apr 20

How we cut down our CI build times by 50%

#engineeringtechniques

13 min read

Shalvah

Feb 2

Solving a logic puzzle

#algorithms

10 min read

Shalvah

Jan 27

Building a PHP client for Faktory, Part 2: Converting to code

#queues #php

5 min read

Shalvah

Jan 27

Building a PHP client for Faktory, Part 1: Talking over TCP

#queues #php

3 min read

Shalvah

Jan 23

Connecting to a Windows server process from WSL

1 min read

Shalvah

Dec 29 '22

Building a task queue, Part 4

#queues #ruby

15 min read

Shalvah

Dec 25 '22

Building a task queue, Part 3

#queues #ruby

9 min read

Shalvah

Nov 20 '22

Ruby's Module class drives me crazy

#ruby #rants

5 min read

Shalvah

Nov 11 '22

Building a task queue, Part 2

#queues #ruby

12 min read

Shalvah

Nov 1 '22

Building a task queue, Part 1

#queues #ruby

12 min read

Shalvah

Oct 7 '22

Why aren't Node.js package managers interoperable?

#node #dependencymanagement

10 min read

Shalvah

Sep 17 '22

PHP 8 attribute quirks

#php

4 min read

Shalvah

Sep 4 '22

Base64's goodness

#engineeringtechniques #encoding

6 min read

Shalvah

Feb 20 '22

String encodings

#data #encoding

17 min read

Shalvah

Jan 18 '22

Serialization

#data #encoding

15 min read

Shalvah

Nov 7 '21

Node.js error-handling gotcha: synchronous errors from an asynchronous function

#javascript #node

3 min read

Shalvah

Nov 1 '21

Experimenting in production

#observability #experiments

5 min read

Shalvah

Oct 19 '21

My book on observability

#observability

2 min read

Shalvah

Oct 15 '21

"Proving" time complexity empirically

#experiments #algorithms

7 min read

Shalvah

Oct 8 '21

A practical tracing journey with OpenTelemetry on Node.js

#observability #node

17 min read

Shalvah

Oct 4 '21

Fixing the Host Header vulnerability with Nginx

#http

4 min read

Shalvah

Jul 30 '21

Implementing programmatic file transformations in PHP, Part 2

#algorithms #php

10 min read

Shalvah

Jul 24 '21

Implementing programmatic file transformations in PHP

#algorithms #php

24 min read

Shalvah

Jul 8 '21

Monkey-patching the Express router

#node

8 min read

Shalvah

May 20 '21

Experiments in concurrency 4: Multiprocessing and multithreading

#experiments #concurrency

12 min read

Shalvah

Apr 29 '21

Experiments in concurrency 3: Event loops

#experiments #concurrency

12 min read

Shalvah

Apr 20 '21

Experiments in concurrency 2: Coroutines

#experiments #concurrency

8 min read

Shalvah

Apr 7 '21

Experiments in concurrency 1: Single-threaded webservers in PHP and Node.js

#experiments #concurrency

8 min read

Shalvah

Mar 5 '21

Understanding Lockfiles

#dependencymanagement #engineeringconcepts

12 min read

Shalvah

Mar 1 '21

When Alternatives are Unhelpful: A Ruby Case Study

#ruby #rants

4 min read

Shalvah

Feb 26 '21

Promises don't hold up the event loop

#node

1 min read

Shalvah

Feb 24 '21

Good Design is Analogous and Intuitive

#musings

5 min read

Shalvah

Feb 20 '21

Living with your (tech) choices

#musings

6 min read

Shalvah

Feb 12 '21

Unconventional Databases

#datastores #engineeringtechniques

8 min read

Shalvah

Feb 11 '21

Understanding Percentiles

#engineeringconcepts #observability

6 min read

Shalvah

Feb 10 '21

Improving Reliability, Part 1

#observability

7 min read

Shalvah

Jan 4 '21

Comparing function handles across languages

#engineeringconcepts

11 min read

Shalvah

Dec 7 '20

A shallow dive into auto-instrumenting Node.js applications with Elastic APM

#observability #node

5 min read

Shalvah

Nov 13 '20

Running non-blocking code in PHP with Amp

#concurrency #php

5 min read

Shalvah

Sep 18 '20

Fun stuff: representing arrays and objects in query strings

#http

5 min read

Shalvah

Aug 4 '20

Building thisvid.space's /open page

#engineeringtechniques

8 min read

Shalvah

May 12 '20

On costs and contexts

#musings

5 min read

Shalvah

Apr 16 '20

What's the big deal about immutability?

#engineeringconcepts

4 min read

Shalvah

Apr 15 '20

Helpful Node.js testing utilities

#node

3 min read

Shalvah

Nov 8 '18

What's software development like as a non-native English speaker?

1 min read

Shalvah

Aug 21 '18

I was bored, so I made my website into a Node package. Here's how.

119

8 min read

Shalvah

Aug 7 '18

A different syntax for enforcing business requirements

2 min read

Shalvah

Jun 26 '18

Pro tip: using Promise.then for function composition

1 min read

Shalvah

Jun 6 '18

How to build a realtime spreadsheets application with Pusher Channels - Part 4: Automatically cleaning up empty documents

#php #pusher #laravel #realtime

5 min read

Shalvah

Jun 6 '18

How to Build a Realtime Spreadsheets Application with Pusher Channels - Part 3: Showing current viewers

#pusher #realtime #php #laravel

5 min read

Shalvah

Jun 6 '18

How to build a realtime spreadsheets application with Pusher Channels - Part 2: Implementing realtime collaboration

#php #laravel #pusher #realtime

7 min read

Shalvah

Jun 6 '18

How to build a realtime spreadsheets application with Pusher Channels - Part 1: Users and spreadsheets

6 min read

Shalvah

May 14 '18

Meet Burns: cleaner application events for Node.js

1 min read

Shalvah

Mar 1 '18

Data constraints: database layer or app logic?

1 min read

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