Validation

downloading redis mac/linux

https://redis.io/download

• cd to download dirctory
• make
• ./src/redis-server

Redis windows:

• For windows : https://github.com/dmajkic/redis/downloads

Redis basics

• https://github.com/NodeRedis/node_redis
• In-memory key value store
• Has basic atomic operations + other cool features
• https://redis.io/commands
• Used for syncing variables across instances, caching and broadcasting updates

Testing redis cli

• Start from same directory as redis server
• ./src/redis-cli
• View commands here: https://redis.io/commands
• View all keys with KEYS *
• Try to view a key with GET myKey

Lab todo:

• Add username/password field, and a button
• On click send the username/password combo to service 2 to validate
• Store username and hashed password as cookie
• Add a new button that makes a request to service 1
• From service 1, validate the request by asking service 2
• Cache the response in service 1.
• Verify subsequent hits to service 1 do not hit service 2 for the timeout period