Possible issues with volume data

Question

Hello everyone, I'm working on a Discord bot for tracking activity metrics like time spent in voice chats and messages sent. It has a weekly & all time leaderboard. Recently, an issue came up where after the weekly leaderboard reset, some users would have their stats reverted to before the reset.

The bot uses JSON as storage through a volume. I've attached both the storage code and the code that handles the leaderboard frontend through Discord.

Relevant snippets:

**Reset Weekly Stats**:
```js
/**
 * Resets the weekly stats for all users
 */
async function resetWeek() {
    try {
        await usersMutex.acquire();

const data = await fs.readFile(USERS_FILE);

let users = JSON.parse(data);

const newUsers = users.map((user) => {
            user["weeklyStats"] = {
                vcMinutes: 0,
                messages: 0,
                weekStart: dayjs().startOf("week").toISOString(),
            };

return user;
        });

await fs.writeFile(USERS_FILE, JSON.stringify(newUsers));
    } finally {
        usersMutex.release();
    }
}```