Gedis

Test task implementation for GoJuno company

Redis-like storage implementation Contains:

• server with HTTP API
• Go Lang client

Stores key-value pairs where key is always string and value could be:

• string
• array
• or dictionary (string -> string)

Supported operations:

• Get
• Set
• Update
• Remove
• Keys
• Get i element on list
• Get value by key from dict

Per key TTL

All the entries will be expired automatically after a certain period of time (1 minute by default) after the last read operation (Set or Update)

API spec (simplified)

URI	METHOD	Description
/heartbeat	GET, HEAD	Check the server state
/keys	GET	Get all the keys
/entries/{key}	GET	Get stored value by the key
/entries/{key}	HEAD	Check if there is a value stored with the key
/entries/{key}	PUT	Update existing value by the key
/entries/{key}	POST	Store a new with the key
/entries/{key}	DELETE	Delete stored value by the key
/entries/{key}/elements/{ind}	GET	Get i element of a list entry stored with the key
/entries/{key}/entries/{subKey}	GET	Get value by subKey from dictionary entry stored with the key

Build info

To build the app and run test suite execute following command

make

Deployment info

To run the server execute following command

go run main.go config.go

The server will start at htpp://localhost:8081

Examples

Check Server state

curl http://localhost:8081/heartbeat -v

< HTTP/1.1 200 OK
I'm ok sinse Thursday, 13-Jul-17 13:39:47 +03

Store new string value

curl -XPOST http://localhost:8081/entries/test -d '"Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."' -v

< HTTP/1.1 201 Created

Store new dictionary value

curl -XPOST http://localhost:8081/entries/233 -d '{"7": "Seven", "8": "Eight", "9": "ooop... Surprise!"}' -v

< HTTP/1.1 201 Created

Get all keys

curl http://localhost:8081/keys -v

< HTTP/1.1 200 OK
["233","test"]

Get string value back

curl http://localhost:8081/entries/test -v

< HTTP/1.1 200 OK
"Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."

Get dictionary nested value

curl http://localhost:8081/entries/233/entries/8 -v

< HTTP/1.1 200 OK
"Eight"

##Get dictionary nested value (ERROR)

curl http://localhost:8081/entries/test/entries/8 -v

< HTTP/1.1 400 Bad Request
Stored value is not a dictionary