TSHTTPTXNR...ACHELOOKUP(3ts)

💖 TSHTTPTXNR...ACHELOOKUP 💖

okay bestie, so this is a page from the Apache Traffic Server manual, section 3ts, and it's all about one very specific little function. buckle up, it's short but it's iconic 🎀

---

✨ NAME ✨

TSHttpTxnRedoCacheLookup — literally the TSHttpTxnRedoCacheLookup API function. that's it, that's the name, no notes 💅

---

🌸 SYNOPSIS 🌸

here's the whole vibe in code form, copy it exactly bestie:

#include <ts/experimental.h>

TSReturnCode TSHttpTxnRedoCacheLookup(TSHttpTxn txnp, const char *url,
int length)

---

🦋 DESCRIPTION 🦋

okay so what does this thing DO. it performs a cache lookup with a different url. yes, a whole different one. main character behavior fr.

the way this works is it rewinds the state machine to go do that new cache lookup. so it's like, going back and re-running the whole thing with your new url. periodt.

⚠️ but listen: the cache_info for the new url must have been initialized before calling this function. do not skip that step, i am begging 😭

and one more lil detail that matters: if the length argument is -1, this function will take the length from the url argument instead. so like, it just figures it out itself. slay 🌈

---

💀 NOTES 💀

this API may be changed in the future version since it is experimental. so like, it's giving "don't get too attached" energy. it's in <ts/experimental.h> for a reason bestie 🫶

---

👑 SEE ALSO 👑

• TSAPI(3ts),

---

🎀 COPYRIGHT 🎀

2026, dev@trafficserver.apache.org

---

and that's the whole page!! 💖 this was Apache Traffic Server, version 9.2, dated Feb 12, 2026 — written by the lovely humans at dev@trafficserver.apache.org. thanks for reading bestie, go initialize your cache_info and stay hydrated 🧚✨💜