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keep failed finalized chains to avoid retries (#3142)

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## Issue Addressed

In very rare occasions we've seen most if not all our peers in a chain with which we don't agree. Purging these peers can take a very long time: number of retries of the chain. Meanwhile sync is caught in a loop trying the chain again and again. This makes it so that we fast track purging peers via registering the failed chain to prevent retrying for some time (30 seconds). Longer times could be dangerous since a chain can fail if a batch fails to download for example. In this case, I think it's still acceptable to fast track purging peers since they are nor providing the required info anyway 

Co-authored-by: Divma <26765164+divagant-martian@users.noreply.github.com>
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Divma
2022-04-13 01:10:55 +00:00
parent aa72088f8f
commit 7366266bd1
6 changed files with 114 additions and 148 deletions
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4
common/lru_cache/src/lib.rs
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@@ -1,7 +1,5 @@
//! A library to provide fast and efficient LRU Cache's without updating.
//! A library to provide fast and efficient LRU Cache's.
mod space;
mod time;
pub use space::LRUCache;
pub use time::LRUTimeCache;