With the ending of Heroku free tier at November 28th 2022, devs are in search of a better PaaS alternative to host their apps. The things I need in a PaaS are: Low latency Ease of deployment Generous free tier Luckily, there’s a lot of available options, from Render, Fly.io…

I have this use case where I want to insert timestamp value to the database, but the value can be null. If you insert an empty time.Time variable to PostgreSQL, the inserted value won’t be `NULL` but `0001–01–01 00:00:00`. Let’s see an example where my “orders” table looks like this: …

Few weeks ago, a lot of people are bashing Tailwind in a Telegram group discussion. The arguments against it are Tailwind slows down teams if not all of them able to use Tailwind, and it makes HTML/JSX ugly. Even one person tells an anecdote of a frontend dev that got…

Few days ago, I was asked about how to make interactive graphs and charts, something like this page. I have made something like that but with React. The problem is it will only be used for a short presentation, so a full-blown react project would be an overkill, with consuming…

Few weeks ago, I did an assignment for a CTO position in an ed-tech startup. They asked me to find flaws in their system. I started from the simplest thing: authentication. I noticed that there was no login attempt limiter in their website. Then I checked the Network tab in…

Di internet, ada banyak data yang jika dikumpulkan dan diolah dengan baik akan menjadi alat yang bagus untuk pengambilan keputusan. Pada kali ini kita akan belajar untuk melakukan mining data dari Twitter menggunakan Twitter API dan Python, dan menyajikannya dalam format *.CSV supaya lebih mudah diolah kalau terbiasa menggunakan Excel.

Kemaren siang, bokap gua minta tolong untuk bantuin ekstrak data dari Twitter API pake bahasa pemrograman R untuk data mining project beliau. Ada dua masalah di sini: (1) gua gabisa bahasa pemrograman R, dan (2) gua masih mahasiswa… jurusan kesehatan, tingkat empat. Meskipun begitu, gua bilang ke bokap gua kalo…