MONGOC_CURSOR_GET_SERVER_ID(3)

✨ MONGOC_CURSOR_GET_SERVER_ID ✨

okay bestie so this is a page from libmongoc (the MongoDB C driver, ily) and it's about a tiny little function that tells you which server your cursor is vibing on. it's giving "who's your main character server" energy and honestly? iconic. let's get into it 💅

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💖 SYNOPSIS 💖

like, here's the whole thing, it's short and sweet fr fr:

uint32_t
mongoc_cursor_get_server_id (const mongoc_cursor_t *cursor);

that's it. that's the whole function. lowkey obsessed with how compact it is 🎀

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🦋 PARAMETERS 🦋

• cursor — a mongoc_cursor_t. that's the cursor bestie, the one you pass in. it's const because we're just looking, not touching ✨

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🌸 DESCRIPTION 🌸

okay so this function retrieves the opaque id of the server used for the operation — like, it hands you back the id of whichever server the thing actually ran on. it's a uint32_t so it's just a number, and it's "opaque" which means don't go digging into what the number means, just know it identifies the server, mwah 💜

and here's the big one, the part you can't skip: this number is zero until two things happen, okay? 👑

1. the driver actually uses a server when executing the find operation — like, it has to actually go do the thing, no daydreaming, or
2. somebody calls mongoc_cursor_set_server_id() — then you've forced the id yourself, no cap

so yeah, before either of those? you're getting 0. not a bug, just the vibe check not having happened yet 🙈

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🧚 AUTHOR 🧚

MongoDB, Inc — yeah they made it, we love them for it 🫶

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🌈 COPYRIGHT 🌈

2009-present, MongoDB, Inc. — long legacy, very main character, periodt 💀✨

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so that's the whole page bestie, go forth and know your server ids 🦋⭐

~ cute sign-off ~ this was libmongoc version 2.5.6, dated Oct 09, 2026 — don't forget it, write it down, tape it to your monitor 🎀💖 bye bestie! 🍓