A reflective essay on time travel, paradoxes, games, and films, arguing that what matters most is not changing the past but learning to live inside time’s one-way motion.

A reflective essay on a summer rainstorm, old friends, online writings, and the quiet sadness that comes with growing older while friendship remains a source of clarity and comfort.

A late-night note about frustrating game matches, wiping a newly bought domain on impulse, and trying to figure out why a WordPress blog still feels painfully slow with only four plugins left.

A personal reflection on visiting a 96-year-old grandmother, the long approach of death, and how confronting mortality sharpens the value of life and love.

A practical walkthrough of adapting Spring Security for separated frontend and backend applications by returning JSON for login, logout, unauthenticated access, user info retrieval, and concurrent session handling.