FUNCTION-FLUSH(3valkey)

💖 FUNCTION-FLUSH — the Valkey glow-up page 💖

okay bestie, you're reading the manual for FUNCTION-FLUSH(3valkey), straight out of the Valkey Command Manual. this is the one that hits the big red button on your functions. let's get into it 🫶

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✨ NAME ✨

function-flush — deletes all libraries and functions. all of them. every single one. the whole collection. 💅

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🌸 SYNOPSIS 🌸

FUNCTION FLUSH [ASYNC | SYNC]

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🦋 DESCRIPTION 🦋

so basically: this nukes all the libraries. gone. poof. ✨

unless you pass the optional mode argument, the lazyfree-lazy-user-flush configuration directive is the one calling the shots and decides what actually happens. the valid modes are:

• ASYNC — flush the libraries asynchronously. it's giving "yeah I'll get to it" 🫧
• SYNC — flush the libraries synchronously. it's giving "no, we do it right now, together" 🔥

want the full lore? go read valkey-functions-intro(7), Introduction to Valkey Functions. it's the prequel, iykyk 📖

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💌 REPLY 💌

per valkey-protocol(7), you get a Simple string reply: OK.

that's it. that's the reply. short, sweet, iconic. 👑

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🎀 COMPLEXITY 🎀

O(N) where N is the number of functions deleted.

so yeah, the more functions you're deleting, the longer it takes. math is math. 🧮

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🌈 ACL CATEGORIES 🌈

• @scripting
• @slow
• @write

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⭐ HISTORY ⭐

• Available since: 7.0.0

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👑 SEE ALSO 👑

• eval(3valkey)
• evalsha(3valkey)
• evalsha_ro(3valkey)
• eval_ro(3valkey)
• fcall(3valkey)
• fcall_ro(3valkey)
• function(3valkey)
• function-delete(3valkey)
• function-dump(3valkey)
• function-help(3valkey)
• function-kill(3valkey)
• function-list(3valkey)
• function-load(3valkey)
• function-restore(3valkey)
• function-stats(3valkey)
• script(3valkey)
• script-debug(3valkey)
• script-exists(3valkey)
• script-flush(3valkey)
• script-help(3valkey)
• script-kill(3valkey)
• script-load(3valkey)
• script-show(3valkey)

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and that's the whole page, bestie 💜 this one's from Valkey 9.0.0, dated 2025-10-21, filed under FUNCTION-FLUSH(3valkey) — go forth and flush responsibly, mwah 🎀✨