APACHE SPARK & DATA ENGINEERING · DAY 086
Spark SQL performance tips: patterns, pitfalls and fixes
Expona Admin · Oct 27, 2026 · 7 min read
Tag · 714 articles
#Databases
Practical Databases articles, guides and code examples from the Expona engineering blog.
APACHE SPARK & DATA ENGINEERING · DAY 087
Reading from JDBC sources: practical tips and trade-offs
Expona Admin · Oct 27, 2026 · 9 min read
APACHE SPARK & DATA ENGINEERING · DAY 088
Writing to databases from Spark: lessons from production
Expona Admin · Oct 27, 2026 · 7 min read
APACHE SPARK & DATA ENGINEERING · DAY 089
Time travel and auditing for Spark & Data Eng developers
Expona Admin · Oct 27, 2026 · 6 min read
APACHE SPARK & DATA ENGINEERING · DAY 095
Partition overwrite mode for Spark & Data Eng developers
Expona Admin · Oct 27, 2026 · 7 min read
RUBY ON RAILS · DAY 001
Why Ruby on Rails in 2026: practical tips and trade-offs
Expona Admin · Oct 27, 2026 · 7 min read
RUBY ON RAILS · DAY 004
Rails directory structure: practical tips and trade-offs
Expona Admin · Oct 27, 2026 · 6 min read
RUBY ON RAILS · DAY 009
Active Record basics: a Ruby on Rails guide for developers
Expona Admin · Oct 27, 2026 · 6 min read
RUBY ON RAILS · DAY 010
Active Record associations: patterns, pitfalls and fixes
Expona Admin · Oct 27, 2026 · 6 min read
RUBY ON RAILS · DAY 011
Migrations in Rails: a Ruby on Rails guide for developers
Expona Admin · Oct 27, 2026 · 7 min read
RUBY ON RAILS · DAY 012
Validations in Rails: a Ruby on Rails guide for developers
Expona Admin · Oct 27, 2026 · 7 min read
RUBY ON RAILS · DAY 014
Scopes in Active Record: a practical Ruby on Rails guide
Expona Admin · Oct 27, 2026 · 7 min read
RUBY ON RAILS · DAY 017
Form helpers in Rails: a practical guide for developers
Expona Admin · Oct 27, 2026 · 7 min read
RUBY ON RAILS · DAY 023
Rails authentication: a Ruby on Rails guide for developers
Expona Admin · Oct 27, 2026 · 7 min read
RUBY ON RAILS · DAY 027
Pagination in Rails: a Ruby on Rails guide for developers
Expona Admin · Oct 27, 2026 · 6 min read
RUBY ON RAILS · DAY 028
Background jobs with Active Job: lessons from production
Expona Admin · Oct 27, 2026 · 6 min read
RUBY ON RAILS · DAY 029
Rails 8 Solid Queue, Cache and Cable explained explained
Expona Admin · Oct 27, 2026 · 6 min read
RUBY ON RAILS · DAY 044
Form objects: concepts, trade-offs and production lessons
Expona Admin · Oct 27, 2026 · 7 min read
RUBY ON RAILS · DAY 045
Rails security checklist: a hands-on guide for engineers
Expona Admin · Oct 27, 2026 · 6 min read
RUBY ON RAILS · DAY 048
Rails performance tuning: a hands-on guide for engineers
Expona Admin · Oct 27, 2026 · 7 min read