Nuxt+express, the difference between writing next.render in express and matching in next.config.js

after entering the configuration discovery, you can run express as the middleware of nuxt, that is, configure serverMiddleware. Start the project with nuxt itself;
can also run nuxt as middleware for express, that is, add next.render to the express entry. Start with node entry .js.

what is the difference between the two methods?

May.04,2022
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-7bd2b6-2893d.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-7bd2b6-2893d.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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