pub async fn prepare(ctx) {
    ctx.prepare(READ, `SELECT * FROM ${KEYSPACE}.${TABLE} WHERE time > ? AND time < ? LIMIT ${READ_SIZE}`).await?;
}

pub async fn run(ctx, i) {
    let low = hash_range(i, ROW_COUNT) * 1000;
    let high = low + 10000;
    ctx.execute_prepared(READ, [low, high]).await?;
}