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Editorial Team
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Asked: 2026-05-14T00:00:13+00:00

Should I initialize the database cursor once per each Apache thread, or should I

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  1. Should I initialize the database cursor once per each Apache thread, or should I initialize one in every function available to HTTP clients?

  2. What happens when the client terminates the connection (i.e. user closes the browser tab)? Does the server-side function that was processing the request continue normally until it returns, or does it get terminated immediately without getting a chance to close all the transactions?

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  1. Editorial Team

    Cursors are expensive resources.

    Generally…

    1. Open them just when you need them.

    2. Close them as soon as you are done with them.

    Cursor-per-thread may tie up resources needlessly. Sometimes you have so much database activity that cursor-per-thread might be higher performance. This is rare. If you think that cursor open-close is slowing things down you need to measure the difference between per-function and per-thread to see what’s really going on.

    The server has no idea what is going on in the browser. Zero. Each request from the browser is a separate, unique, disconnected event.

    If the browser “closes”, that doesn’t mean anything. It only means that the server doesn’t get any further requests.

    If the server was trying to download a response, then the socket crashes and the server eventually stops trying.

    If the server wasn’t processing anything, it’s still not processing anything.

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