Core feature development

[yatharthmathur]

Functional Requirements:

• Can add a Key Value pair (String, Bytes Array) #5
• Can get a value in (String or Bytes Array form) given a Key (bytes array by default) #6
• Have a TTL for keys and expire them when the keys are expired #7
• Delete key from Key Value store #12
• Keys should be cleaned up after they are expired #13
  • For now implement a lazy cleanup service i.e if key is expired on get, return None and expire the key (if not expired already)
• Add a contains function to check if it exists in the Key Value Store #15
• Add types using enums
  • Add type Integer
  • Add type String
  • Add type List
  • Add type Bytes
  • Add type HashSet
  • Add type HashMap
• Add event main loop #36
  • Add cleanup service that runs periodically to delete cache keys which are expired.
• Add API to interact with the Key Value store #37
  • Create a client that can interact with the API
• Add persistence
  • Snapshots for now
  • Take periodic snapshots