cachedo

Table of Contents

• CacheDo
  • setCache
  • setOptions
  • hashKey
  • setKet
  • put
  • get

CacheDo

Cache abstraction that supports merging cached values with new and key hashing

Parameters

• cacheClass Class Caching class with get, put, del methods
• options JSON Class operation definition
  • options.merge Boolean (false) Enable/Disable merging new value with present value if one exists
  • options.keys JSON Defines options specific to key management
    • options.keys.hashKey Boolean (false) Enable/Disable key hashing
    • options.keys.algorithm String (sha256) Defines algorith used during key hash
    • options.keys.digest String (hex) Defines digest used during key hash
    • options.keys.keyGen Function ((input)=>{return input}) Custom function to produce key
  • options.ttl Number (600) Define expire time of the cached value
  • options.timeoutCB (Undefined | Function) (Undefined) Custom callback function to be executed when cache value expires

Meta

• version: 1.0.0

setCache

Validates caching function by ensuring that it contains methods get, put, del

Parameters

• cacheClass Function Caching function

setOptions

Merges and returns a validated option set

Parameters

• options JSON Class operation definition
  • options.merge Boolean (false) Enable/Disable merging new value with present value if one exists
  • options.keys JSON Defines options specific to key management
    • options.keys.hashKey Boolean (false) Enable/Disable key hashing
    • options.keys.algorithm String (sha256) Defines algorith used during key hash
    • options.keys.digest String (hex) Defines digest used during key hash
    • options.keys.keyGen Function ((input)=>{return input}) Custom function to produce key
  • options.ttl Number (600) Define expire time of the cached value
  • options.timeoutCB (Undefined | Function) (Undefined) Custom callback function to be executed when cache value expires

hashKey

Produces hash of parameter.

Parameters

• input (Number | String | JSON) Value to be hashed

setKet

Generates key based on configuration settings

Parameters

• input (Number | String | JSON) Value to be hashed

put

Pushes key/value pair to cache

Parameters

• key String
• value (Number | String | JSON) Value to be cached
• options JSON Optional options passed that will override options used during class instantiation
  • options.merge String Enable/Disable merging new value with present value if one exists
  • options.ttl String Define expire time of the cached value
  • options.timeoutCB String Custom callback function to be executed when cache value expires

get

Calls cache to return value assigned to key

Parameters

• key String