1. asyncData runs on the server, cannot be requested with ajax, is already running on the server, and does not require ajax.
2. you cannot require mongo a database in entry-server.js,
3. where should I execute the query command of mongodb and send the data to asyncData?
4. is it possible to put data into context in front of the render page?

const baseRender = async function(ctx, next){
    let context = {url: ctx.request.url};
    let htmlStr = await new Promise((resolve, reject) => {
        renderer.renderToString(context, (err, html) => {
      if (err) {
        reject(err)
      }
      resolve(html);
    });
    }).catch(e => {
        console.error(e);
        return e;
    });
    if (htmlStr.code && htmlStr.code === 404) {
        await next();
    } else {
        ctx.body = htmlStr;
    }
    
}