License ↔ legal standard to permit use & destribution of product
Public Domain
no License to allow mod/redis w/o limit
FOSS
Permissive License to allow mod/redis w/o commercial limit & expose ALL Source Code
Copyleft
License to allow mod/redis AND variants must inherit License
Proprietary
License to restrict mod/redis. Retain author & close-source
SSPL
References
MIT License↔ FOSS License to permit Software redis incl propriety commercial software. Must credit author w/o liabilityDRM↔ System to manage License access/distribution for App/product/servicePublic Domain↔ no License to allow mod/redis w/o limitCopyleft↔ License to allow mod/redis AND variants must inherit LicenseProprietary↔ License to restrict mod/redis. Retain author & close-sourcePermissive License↔ License to allow mod/redis of Software & components