MEMCACHED_EXIST(3)

💅 MEMCACHED_EXIST — libmemcached-awesome 💅

okay bestie, welcome to MEMCACHED_EXIST(3), straight outta the libmemcached-awesome manual set 🎀 this is the one where you're just peeking — "hey does this key even exist??" — no reads, no writes, just a lil vibe check on your cache ✨

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🌸 NAME 🌸

memcached_exist — libmemcached Documentation 💖

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✨ SYNOPSIS ✨

like, literally just pull it in:

#include <libmemcached/memcached.h>

and bestie you have to compile and link with -lmemcached or she will not show up. no cap. 🫶

memcached_return_t memcached_exist(memcached_st *ptr, char *key, size_t *key_length)

memcached_return_t memcached_exist_by_key(memcached_st *ptr, char *group_key, size_t *group_key_length, char *key, size_t *key_length)

🌈 Parameters

• ptr — pointer to an initialized memcached_st struct 👑 (yes it must be initialized, don't be doing nonsense)
• group_key — the key namespace 🗂️
• group_key_length — length of the group_key without any terminating zero
• key — the key to check 🔍
• key_length — length of the key without any terminating zero

💜 Returns

memcached_return_t indicating success ⭐

📌 Added in version 0.53. so if you're on something older, she's not there yet, sorry bestie 😭

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🦋 DESCRIPTION 🦋

memcached_exist() can be used to check if a key exists. that's it, that's the whole thing 💅 it's giving "am I being ghosted or is this key actually real" energy. use it, love it, periodt.

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💖 RETURN VALUE 💖

• MEMCACHED_SUCCESS — The key exists. 🎉 she's alive!! iconic!!
• MEMCACHED_NOTFOUND — The key was not found. 💀 not me getting left on read by the cache

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🎀 SEE ALSO 🎀

memcached(1) libmemcached(3) memcached_strerror(3) — go read those too, iykyk 🧚

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version 1.1, dated Jul 24, 2025 — that's the libmemcached-awesome glow-up, and honestly? she ate. mwah 💋 bye bestie, go check some keys 🦋✨