Snapshot

A snapshot is the capture of a player's stats at a certain moment in time. If you look up a player, such a snapshot is made. Currently, a snapshot consists of the following properties:

      "queried": 1746006803179,
      "uuid": "0068d9ff-46fa-4aae-8bcf-86a215cd4264",
      "player": "LifelessNerd",
      "statsVersion": 3,
      "stats": {
        "skywars_experience": 315485.6,
        "coins": 5293012,
        "opals": 18,
        "heads": 11861,
        "souls": 965,
        "kills": 93140,
        "deaths": 42818,
        "wins": 13260,
        "losses": 42130,
        "time_played": 4016532,
        "wins_solo": 9477,
        "losses_solo": 31957,
        "kills_solo": 67793,
        "deaths_solo": 31942,
        "time_played_solo": 2796362,
        "wins_team": 2913,
        "losses_team": 7961,
        "kills_team": 21681,
        "deaths_team": 8619,
        "time_played_team": 936950,
        "wins_mini": 124,
        "kills_mini": 302,
        "time_played_mini": 18455

Each of these stats can then be used to generate a full breakdown that you see on https://lukatools.nl/hypixeltools/player/LifelessNerd/stats.

If a player is looked up, an API request towards Hypixel fetches and compiles these stats (along some other), and saves these in a database. This allows anyone to later see these stats, along with when they were pulled from Hypixel. A comparison, as well as a session can be extracted from two snapshots.

The saving of stats in the database is restricted to once per 16 hours. Best is to look up your stats at the start of your session, so you can track this throughout the rest of the day.