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Optimise slasher DB layout and switch to MDBX (#2776)

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## Issue Addressed

Closes #2286
Closes #2538
Closes #2342

## Proposed Changes

Part II of major slasher optimisations after #2767

These changes will be backwards-incompatible due to the move to MDBX (and the schema change) 😱 

* [x] Shrink attester keys from 16 bytes to 7 bytes.
* [x] Shrink attester records from 64 bytes to 6 bytes.
* [x] Separate `DiskConfig` from regular `Config`.
* [x] Add configuration for the LRU cache size.
* [x] Add a "migration" that deletes any legacy LMDB database.
This commit is contained in:
Michael Sproul
2021-12-21 08:23:17 +00:00
parent a290a3c537
commit 3b61ac9cbf
26 changed files with 963 additions and 566 deletions
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4
slasher/Cargo.toml
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@@ -13,8 +13,8 @@ flate2 = { version = "1.0.14", features = ["zlib"], default-features = false }
lazy_static = "1.4.0"
lighthouse_metrics = { path = "../common/lighthouse_metrics" }
filesystem = { path = "../common/filesystem" }
lmdb = "0.8"
lmdb-sys = "0.8"
mdbx = { package = "libmdbx", version = "0.1.0" }
lru = "0.6.6"
parking_lot = "0.11.0"
rand = "0.7.3"
safe_arith = { path = "../consensus/safe_arith" }