Config ((full)) Here

Starting server with config: DB_HOST: localhost (source: env) DB_NAME: myapp LOG_LEVEL: debug API_KEY: ******** (source: vault)

+-----------------------------------+ | Application Code | | (Reads variables, contains logic)| +-----------------+-----------------+ | v Reads at runtime +-----------------+-----------------+ | Configuration File | | (Stores database URLs, ports) | +-----------------------------------+ Why Separation Matters config

Different technologies rely on specific serialization languages to handle configuration data. The table below outlines the most widely used formats in modern software engineering: File Extension Structural Style Primary Use Cases .json Key-value pairs with strict brace syntax config

Different technologies utilize different file formats to structure configuration data. Choosing the right format depends on the complexity of the application and whether the file needs to be easily read by humans or processed strictly by machines. 1. JSON (JavaScript Object Notation) config

When you need a human‑editable format with clear types and comments.