Classify these technologies as frontend or backend oriented: React, Kafka, MySQL, JavaScript, gRPC, SQL, Prometheus, Android, Swift, Redis, JDBC
React, Android, Swift and JavaScript are frontend oriented, while Kafka, MySQL, gRPC, SQL, Prometheus, Redis and JDBC are backend oriented.
Instruction: Classify these technologies as frontend or backend oriented: React, Kafka, MySQL, JavaScript, gRPC, SQL, Prometheus, Android, Swift, Redis, JDBC
Context: 
Response: React, Android, Swift and JavaScript are frontend oriented, while Kafka, MySQL, gRPC, SQL, Prometheus, Redis and JDBC are backend oriented.