[#MemPoolFeeRateEstimatorCache-Update]
= xref:MemPoolFeeRateEstimatorCache.adoc[MemPoolFeeRateEstimatorCache]::Update
:relfileprefix: ../
:mrdocs:

Update the cache with new estimates computed on tip_hash.

== Synopsis

Declared in `<policy/fees/mempool_estimator.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
Update(
    xref:FeePerVSize.adoc[FeePerVSize] conservative,
    xref:FeePerVSize.adoc[FeePerVSize] economical,
    xref:uint256.adoc[uint256] const& tip_hash);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *conservative*
| The conservative fee rate estimate to store.
| *economical*
| The economical fee rate estimate to store.
| *tip_hash*
| Hash of the chain tip the estimates were computed on.
|===


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