# Panos Matsinopoulos > Humble Software Reader, Writer and DevOps Builder, with love for Classical Music. ## Recent Posts - [Querying a Daily Stats Table - Postgres](https://paragraph.com/@panagiotismatsinopoulos/querying-a-daily-stats-table-postgres) - [Singleton, Unique Jobs, Concurrency - Ruby on Rails](https://paragraph.com/@panagiotismatsinopoulos/singleton-unique-jobs-concurrency-ruby-on-rails) - [SQL Query Annotation](https://paragraph.com/@panagiotismatsinopoulos/sql-query-annotation) - [Find Long Ruby on Rails Requests](https://paragraph.com/@panagiotismatsinopoulos/find-long-ruby-on-rails-requests) - [[book review] The Developer Facing Startup, by Adam Frankl](https://paragraph.com/@panagiotismatsinopoulos/book-review-the-developer-facing-startup-by-adam-frankl) - [Gas Optimization - Yul/Assembly](https://paragraph.com/@panagiotismatsinopoulos/gas-optimization-yul-assembly) - [Arigatai; Express Gratitude That Stays In History](https://paragraph.com/@panagiotismatsinopoulos/arigatai-express-gratitude-that-stays-in-history) ## Blog Information - [Homepage](https://paragraph.com/@panagiotismatsinopoulos/): Main blog page - [RSS Feed](https://api.paragraph.com/blogs/rss/@panagiotismatsinopoulos): Subscribe to updates - [Twitter](https://twitter.com/pmatsino): Follow on Twitter ## Optional - [All Posts](https://paragraph.com/@panagiotismatsinopoulos/): Complete post archive - [Sitemap](https://paragraph.com/@panagiotismatsinopoulos/sitemap-index.xml): XML sitemap for crawlers