Vlad Mihalcea Profile picture
@Java Champion working on @Hypersistence Optimizer and @RevoGainCom, author of High-Performance Java Persistence. Blogging at https://t.co/vk0cYzsg81
Aug 1, 2022 7 tweets 3 min read
As a developer, we are always told to Keep It Simple, but what does that even mean in reality?

Here's a real-life example. 👇 When I was developing RevoGain, I needed the historical prices of all the cryptocurrencies supported by #Revolut or #Kraken.

That's around 144 cryptos. So, most of you would store them in a DB, right?

Well, that would pose a lot of challenges.

revogain.com
Jul 13, 2022 10 tweets 2 min read
I've been blogging constantly for almost 9 years now, so here's a list of tips I've discovered all along:

1. Just do it! If you are waiting for the right time to start blogging, you will never do it. 2. Keep it simple! I started either WordPress.com and it worked liked a charm since I can focus on content creation while Automattic takes care of backups, caching, security updates, and failover.
May 19, 2021 11 tweets 3 min read
9 High-Performance Tips when using PostgreSQL with JPA and Hibernate, a🧵 1. Use a SEQUENCE generator for entity identifiers. The Serial column type can affect the automatic batch INSERTs.

vladmihalcea.com/postgresql-ser…
Jul 12, 2020 12 tweets 3 min read
You can write a software book and make over 100k $

Here's what worked for me:

1. I started a blog first. This allows you to practice your writing and build an audience. 2. I self-published my book because publishers only wanted to give me just 10% from the profit.

I used @leanpub to write and sell the book while I was still writing it and @teachable to sell it when it was done.

Leanpub gives you 80% royalties. Teachable gives you around 95%.