Original author, how can it be possible that 350,000 hibernate items only take 2 seconds, even if you use a database,

Unless you are lazy loading and only load the primary key, you will take out an empty object with only the primary key< /p>

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I thought you found out all 350,000 items. Sorry, I was wrong. If you found out all the items, it would be impossible in seconds.

Indeed, 20 items 2 There is a lot of room for optimization in seconds