[#FlushStateMode]
= FlushStateMode
:mrdocs:

How aggressively FlushStateToDisk should flush chainstate to disk.

== Synopsis

Declared in `<validation.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
enum class FlushStateMode : uint8_t;
----

== Members

[cols="1,4"]
|===
| Name| Description
| `NONE` 
| Only prune if needed; do not otherwise flush.
| `IF_NEEDED` 
| Flush only if the caches are too large or a write is overdue.
| `PERIODIC` 
| Flush if enough time has passed since the last write.
| `FORCE_FLUSH` 
| Always flush the caches to disk.
| `FORCE_SYNC` 
| Always flush and fsync the data to durable storage.
|===



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