[#CCoinsCacheEntry-Flags]
= xref:CCoinsCacheEntry.adoc[CCoinsCacheEntry]::Flags
:relfileprefix: ../
:mrdocs:

Per‐entry state flags controlling how an entry is flushed to the parent cache.

== Synopsis

Declared in `<coins.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
enum Flags;
----

== Members

[cols="1,4"]
|===
| Name| Description
| `DIRTY` 
| DIRTY means the CCoinsCacheEntry is potentially different from the version in the parent cache. Failure to mark a coin as DIRTY when it is potentially different from the parent cache will cause a consensus failure, since the coin's state won't get written to the parent when the cache is flushed.
| `FRESH` 
| FRESH means the parent cache does not have this coin or that it is a spent coin in the parent cache. If a FRESH coin in the cache is later spent, it can be deleted entirely and doesn't ever need to be flushed to the parent. This is a performance optimization. Marking a coin as FRESH when it exists unspent in the parent cache will cause a consensus failure, since it might not be deleted from the parent when this cache is flushed.
|===



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