Firebase database model example for a Twitter-like application

database.json

{

  "users": {
    "280598f1-e31e-4ced-845e-c8dd10e11ec3": {
      "first_name": "Guido",
      "last_name": "Marucci Blas",
      "username": "guidomb",
      "email": "guidomb@wolox.com.ar"
    },
    "280598f1-e31e-4ced-845e-c8dd10e11ad5": {
      "first_name": "Nicolas",
      "last_name": "Magni",
      "username": "nmagni",
      "email": "nicomagni@wolox.com.ar"
    },
    "280598f1-e31e-4ced-845e-c8dd10e34ff0": {
      "first_name": "Santiago",
      "last_name": "Samra",
      "username": "rampa",
      "email": "santiago.samra@wolox.com.ar"
    }
  },

  "followers": {
    "280598f1-e31e-4ced-845e-c8dd10e11ec3": {
      "280598f1-e31e-4ced-845e-c8dd10e11ad5": true,
      "280598f1-e31e-4ced-845e-c8dd10e34ff0": true
    },

    "280598f1-e31e-4ced-845e-c8dd10e11ad5": {
      "280598f1-e31e-4ced-845e-c8dd10e34ff0": true
    }
  },

  "posts": {
    "280598f1-e31e-4ced-845e-c8dd10e11ec3": {
      "-KAB6ygHkvPkUiZn7CHT": {
        "text": "Hello everybody. What a nice day!",
        "created_at": 1455123590245
      },
      "-KAB6ygHkvPkUiZn7CFF": {
        "text": "This is my second post",
        "created_at": 1455123590235
      },
      "-KAB6ygHkvPkUiZn7CC1": {
        "text": "This is my first post!",
        "created_at": 1455123590230
      }
    },

    "280598f1-e31e-4ced-845e-c8dd10e11ad5": {
      "-AAB6ygHkvPkUiZn7123": {
        "text": "Hello world!",
        "created_at": 1455123590260
      }
    }
  },

  "feeds": {

    "280598f1-e31e-4ced-845e-c8dd10e11ec3": {
    
    },

    "280598f1-e31e-4ced-845e-c8dd10e11ad5": {
      "-KAB6ygHkvPkUiZn7CHT": {
        "text": "Hello everybody. What a nice day!",
        "created_at": 1455123590245,
        "created_by": {
          "user_id": "280598f1-e31e-4ced-845e-c8dd10e11ec3",
          "username": "guidomb"
        }
      },
      "-KAB6ygHkvPkUiZn7CFF": {
        "text": "This is my second post",
        "created_at": 1455123590235,
        "created_by": {
          "user_id": "280598f1-e31e-4ced-845e-c8dd10e11ec3",
          "username": "guidomb"
        }
      },
      "-KAB6ygHkvPkUiZn7CC1": {
        "text": "This is my first post!",
        "created_at": 1455123590230,
        "created_by": {
          "user_id": "280598f1-e31e-4ced-845e-c8dd10e11ec3",
          "username": "guidomb"
        }
      }
    },

    "280598f1-e31e-4ced-845e-c8dd10e34ff0": {
      "-AAB6ygHkvPkUiZn7123": {
        "text": "Hello world!",
        "created_at": 1455123590260,
        "created_by": {
          "user_id": "280598f1-e31e-4ced-845e-c8dd10e11ad5",
          "username": "nmagni"
        }
      },
      "-KAB6ygHkvPkUiZn7CHT": {
        "text": "Hello everybody. What a nice day!",
        "created_at": 1455123590245,
        "created_by": {
          "user_id": "280598f1-e31e-4ced-845e-c8dd10e11ec3",
          "username": "guidomb"
        }
      },
      "-KAB6ygHkvPkUiZn7CFF": {
        "text": "This is my second post",
        "created_at": 1455123590235,
        "created_by": {
          "user_id": "280598f1-e31e-4ced-845e-c8dd10e11ec3",
          "username": "guidomb"
        }
      },
      "-KAB6ygHkvPkUiZn7CC1": {
        "text": "This is my first post!",
        "created_at": 1455123590230,
        "created_by": {
          "user_id": "280598f1-e31e-4ced-845e-c8dd10e11ec3",
          "username": "guidomb"
        }
      }
    }
    
  }

}