local storage - Ways to store JSON data -

i'm making api call , response i'm getting rather large json string. i'd minimise api calls a) avoid hitting rate limit , b) speed things up.

here's example of json data:

{   "firstname": "john",   "lastname": "smith",   "isalive": true,   "age": 25,   "address": {     "streetaddress": "21 2nd street",     "city": "new york",     "state": "ny",     "postalcode": "10021-3100"   },   "phonenumbers": [     {       "type": "home",       "number": "212 555-1234"     },     {       "type": "office",       "number": "646 555-4567"     }   ],   "children": [],   "spouse": null } 

my question:

what options reference persistent storage?

please note: api i'm using in beta; i'd avoid using mysql because json representation change, resulting in tables needing overhaul.