<p>Those paying the lowest feerate are dropped, working similarly to the transaction selection logic for blocks which prioritizes transactions that have the highest feerate.</p>

CC BY-SA 4.0
2023-04-21T06:32:32.777Z
So can an incoming orphan tx with higher fees displace a transaction in the regular tx pool, or will it only replace a transaction in the orphan tx pool?
sphpmp
CC BY-SA 4.0
2021-12-17T04:41:54.787Z
2021-12-17T04:41:54.787Z
Claris
<p>Since mining nodes has memory limitations, what would happen if transaction and orphan pools is full?</p>
<p>If the nodes need to drop certain transactions, how does the nodes choose which transaction to drop?</p>

<mining-pools>
What would happen when transaction and orphan pools is full?
daisy
# What would happen when transaction and orphan pools is full?

(Asked by: username_0 on 2021-12-17)

Since mining nodes has memory limitations, what would happen if transaction and orphan pools is full?

If the nodes need to drop certain transactions, how does the nodes choose which transaction to drop?

**Tags:** mining-pools


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## 1 answers

### Answer by username_1 on 2021-12-17. Score: 3 | Accepted answer

Those paying the lowest feerate are dropped, working similarly to the transaction selection logic for blocks which prioritizes transactions that have the highest feerate.

> **Comments:**
> **username_2**: So can an incoming orphan tx with higher fees displace a transaction in the regular tx pool, or will it only replace a transaction in the orphan tx pool?  

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