Package app provides vars that can be populated via "-X" linker flags to provide global application metadata, such as build time or version.

Package config provides a common infrastructure for reading configuration data stored in local TOML files.

Package db is the base package for database access at stellar.

Package errors provides the common infrastructure for managing errors.

Package http provides easy access to Stellar's best practices for building http servers.

Package log provides the common logging facilities used by the Stellar Development foundation.

Package test contains simple test helpers that should not have any service-specific dependencies.