SCRIPT-EXISTS(3valkey)

✨ SCRIPT-EXISTS — the "do u even go here?" check for ur Lua scripts 💅

okay so this is a page from the Valkey Command Manual, and it's all about SCRIPT-EXISTS(3valkey), bestie. buckle up, it's short but it's iconic.

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🌸 NAME 🌸

script-exists — literally just checks whether ur server-side Lua scripts exist in the script cache. that's it. that's the whole job. and she does it flawlessly. 👑

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🎀 SYNOPSIS 🎀

SCRIPT EXISTS sha1 [sha1...]

one or more SHA1 digests, one command. very demure, very mindful. ✨

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💖 DESCRIPTION 💖

so basically this command returns info about whether scripts are chillin' in the script cache or not.

it takes one or more SHA1 digests and hands u back a list of ones and zeros — 1 means "yep, she's already defined in the script cache 🫶", 0 means "nope, never seen her 🙈". a lil vibe check, if u will.

why do u care? bc this is the move before a pipelining operation, fr fr. u check first to make sure the scripts are loaded — and if they're not, u load them with valkey-script-load(7) SCRIPT LOAD — so that the pipelining operation can go off using only valkey-evalsha(7) EVALSHA instead of valkey-eval(7) EVAL, which saves u bandwidth. saving bandwidth is self-care, periodt. 💅

want the full lore on EVAL scripts? go read valkey-eval-intro(7) Introduction to Eval Scripts. it's giving required reading. 📚

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🦋 REPLY 🦋

valkey-protocol(7) Array reply: an array of integers that correspond to the specified SHA1 digest arguments. so like, one integer per sha1 u asked about, in order. no cap. 🔥

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🌈 COMPLEXITY 🌈

O(N) where N is the number of scripts to check — so checking a single script is an O(1) operation. she scales, bestie. ⭐

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💜 ACL CATEGORIES 💜

• @scripting
• @slow

iykyk. 👑

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🧚 HISTORY 🧚

• Available since: 2.6.0 — an OG, honestly. she's been serving since forever. 🎀

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🌸 SEE ALSO 🌸

go give these queens some love too:

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

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okay that's the whole page, and omg u read it all, ur literally the main character. 🫶 this lil masterpiece is from Valkey 9.0.0, dated 2025-10-21, and it lives under the name SCRIPT-EXISTS(3valkey). mwah, bye bestie 💖✨