Backend
Java and JVM
JDK notes, JVM internals, concurrency, source-code reading, and framework design.
Kevin's Knowledge Base
A calm, searchable archive for engineering notes, papers, source-code reading, and long-term learning.
Start here
Three practical routes into the same archive.
01
Search the full archive
Global search, category filters, file type filters, and direct document actions.
Open
02
Read Markdown articles
A focused queue for long-form notes that can open in the reader.
Read
03
Choose a reading path
A curated hub for product entry, article browser, reader, and source repository.
Map
Core areas
The library spans backend engineering, data systems, architecture, and career practice.
Data
Big data systems
Hadoop, Spark, Flink, Google papers, storage systems, and data engineering practice.
Systems
Architecture
Distributed systems, service design, storage choices, and operational thinking.
Recently indexed
A live slice from the generated knowledge index.