defaults/ # base for all environments app.toml dev/ # overrides for development app.toml staging/ app.toml prod/ app.toml secrets/ # never committed prod/vault.env
At its most basic level, configuration is about choice. When you change the "config" of a video game to lower the graphics quality so it runs smoother on an older laptop, you are modifying its configuration. When a developer sets up a web server, they use a "config" file to determine which website should be shown to visitors and what security measures should be in place. These files often use simple formats like JSON, YAML, or TOML, which are designed to be readable by both humans and machines. This readability is crucial because it allows users to make complex changes without having to rewrite the actual code of the program. config
Modifying a configuration setting does not require recompiling or rebuilding the application binary, significantly speeding up operational workflows. 2. Common Configuration Formats defaults/ # base for all environments app
Modern cloud-native apps follow the Twelve-Factor App methodology, which famously states: "Store config in the environment." This avoids the nightmare of config files accidentally checked into version control with production credentials. Environment-based config scales horizontally—every container gets its own injected variables. These files often use simple formats like JSON,
Dead simple; formats values as plain text lines ( DATABASE_URL=localhost ).
defaults/ # base for all environments app.toml dev/ # overrides for development app.toml staging/ app.toml prod/ app.toml secrets/ # never committed prod/vault.env
At its most basic level, configuration is about choice. When you change the "config" of a video game to lower the graphics quality so it runs smoother on an older laptop, you are modifying its configuration. When a developer sets up a web server, they use a "config" file to determine which website should be shown to visitors and what security measures should be in place. These files often use simple formats like JSON, YAML, or TOML, which are designed to be readable by both humans and machines. This readability is crucial because it allows users to make complex changes without having to rewrite the actual code of the program.
Modifying a configuration setting does not require recompiling or rebuilding the application binary, significantly speeding up operational workflows. 2. Common Configuration Formats
Modern cloud-native apps follow the Twelve-Factor App methodology, which famously states: "Store config in the environment." This avoids the nightmare of config files accidentally checked into version control with production credentials. Environment-based config scales horizontally—every container gets its own injected variables.
Dead simple; formats values as plain text lines ( DATABASE_URL=localhost ).