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Editorial Team
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Asked: 2026-06-10T10:07:22+00:00

While learning Java I have come across a lot of questions regarding how to

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While learning Java I have come across a lot of questions regarding how to program something ‘the best way’. An example is a chat program.

When a changes their status, display name, display picture or personal message it sends a request to the server and the server keeps all the server data in memory. My question is: Is it good practice to avoid database I/O and keep everything sync’d in memory. So if a user changes their display name should I update the users status in memory on the server AND update it in the database? Or wait till the user disconnects and then write their information to database?

I hope I am clear. This goes for all different kinds of programs, syncing settings ect..

I ask this because if the server crashes then all the data in memory wouldnt be saved in the database and user info would be rolled back.

Thanks guys.

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1 Answer

  1. Editorial Team

    For this question, there is no single “best practice”. at best, there are probably a handful of “best practices” covering a variety of more specific use cases. as already pointed out in the comments on the OP, there are various questions that come up, e.g.:

    • frequency of data modification
    • app speed requirements
    • available memory
    • data size
    • acceptability of stale data
    • acceptability of lost data

    until you start answering these questions, no one can start giving concrete recommendations.

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