My personal headphones tier list.

A detailed breakdown of the options Greeks (Delta, Theta, Vega, Gamma, and Rho) and how they affect option pricing and strategy.

The fundamentals of stock options and why they can be an extremely useful tool in your arsenal.

Reference on how the markets work. Covers stocks, exchanges, market makers, options, futures, forwards, swaps, and the macro factors that move markets.

Cars I've driven.

Personal cheatsheet for Apache Spark with Java. Covers SparkSession, RDDs, DataFrames, Datasets, transformations, Spark SQL, reading/writing data, partitioning, caching, UDFs, tuning, and structure...

Personal cheatsheet for Apache Kafka. Covers brokers, topics, partitions, offsets, producers, consumers, consumer groups, Java client examples, Spring Boot Kafka, Confluent Platform, Schema Registr...

A practical walkthrough of deploying a Spring Boot application to Kubernetes using Helm charts with per-environment values files, orchestrated through a GitLab CI/CD pipeline.

Personal cheatsheet for Apache Iceberg. Covers core concepts, catalog types, Hadoop and REST catalog setup, Spark integration, reading and writing, time travel, schema evolution, and partitioning.

Personal notes and cheatsheet made during CKAD exam prep. Covers all five exam domains: application design and build, deployment, observability, environment and security, and services and networking.

Personal cheatsheet for authentication and authorisation. Covers password hashing, JWT, OAuth2 grant types, OpenID Connect, token storage, and implementation examples with Spring Security and FastA...

A reference of character encodings.

Personal cheatsheet for Apache Avro. Covers schema design, type system, doc fields, JSON-to-Avro conversion, schema evolution, Java serialization, Confluent Schema Registry integration, compatibili...

HTTP Concepts Cheatsheet: methods, status codes, headers, caching, CORS, URL encoding, and REST API design conventions.

Random works.