Schema-on-read vs schema-on-write
Schemas - which of them are more secure?
Defensive programming in Java
Defensive programming: exception handling, try-with-resources, AutoCloseable and Closeable, assertions.
SQL injection and how to mitigate
SQL injection, query parametrization, prepared statements, input validation.
SQL security basics
Security in normalized and denormalized database, integrity, idempotent vs deterministic functions.
Database monitoring, SQL optimization & transactions
Query execution plan, profiler, flame graph, transactions, locking, ACID.
SQL cheatsheet: part 7
Advanced SQL for Java devs: cursor, function, trigger, index.
SQL cheatsheet: part 6
Advanced SQL for Java developers: procedure, view.
SQL cheatsheet: part 5
Medium SQL for Java developers: recapitulation.
SQL cheatsheet: part 4
Medium SQL for Java developers: CRUD operations, n+1 problem, Flyway & Liquibase migrations.
SQL cheatsheet: part 3
Basic SQL for Java developers: union vs join, left join, right join, inner vs outter join.
SQL cheatsheet: part 2
Basic SQL for Java developers: aggregations, group by, where vs having.
SQL cheatsheet
Basic SQL for Java developers: SELECT, Boolean operators, mathematics and other tricks.
Hashing: part 2
Hashing in Java: object serialization, security & cryptography.
Hashing
Hashing in Java: data structures, collections, security, cryptography.
Java REPL: JShell
Using Java in terminal console. Running Java code without compilation. Creating executable scripts in Java.
LibreWolf review
Private Firefox-based browser for Linux and macOS.
Class internals: hacking Java bytecode
Hacking Java bytecode and hex editing.
Class internals: introduction
Introduction to Java .class file internals basics.
Heisenbugs in Java
Debugging Heisenbugs in Java and other creatures.
Zanshin
Read why some Japanese martial arts and Zen concept should be apply to software development.
Ubuntu Privacy 101
Linux is more private OS. Learn basic setup that increases privacy even more.
Java: Sniper Code
Follow ten simple rules and become Java sniper.
Java: Abstract class vs interface
Comparing abstract classes and interfaces. Similarities and differences.
Networking: OSI model & OSINT tools for Linux
OSI model explained along with simple command-line OSINT tools.
Books: AI
Trending books on AI. How high-tech affects geopolitics and vice versa.
Polymorphism and RTTI pitfalls
Less-known issues related Java polymorphism & RTTI
Books: Chip wars, geopolitics and strategy
Programming is not only about technology, but also about strategy.
What is SOLID and when NOT to use it
SOLID principle explained on real practical examples.
Java: Standing Operating Procedures (SOP)
SOP in Java software development.
The Groovy Truth
Groovy truth explained.
Groovy Intro
Intro to Groovy language.
Groovy: Why Spock?
Why to use Spock - a Groovy testing framework?
Bitshift
Shifting bits explained with examples.
Bitwise
Bitwise operators explained with examples.
Java: Concurrency
Basics of concurrency in Java.
Java: Garbage collector
Garbage collector in Java.
Java: Memory leaks
Memory leaks in Java.
Java: Diamond problem
Diamond inheritance problem in Java.
Compiler vs interpreter
Compiler and interpreter - differences explained.
What properties should have an algorithm?
Every algorithm should be like this.
How to Jekyll and GitHub Pages - knowledge base
How to create your website for free with GitHub?