comment about max execution headers to keep

bkontur · Mar 25, 2024 · 410f9c3 · 410f9c3
1 parent 0241dd7
commit 410f9c3
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diff --git a/system-parachains/bridge-hubs/bridge-hub-kusama/src/bridge_to_ethereum_config.rs b/system-parachains/bridge-hubs/bridge-hub-kusama/src/bridge_to_ethereum_config.rs
@@ -139,6 +139,9 @@ parameter_types! {
 }
 
 parameter_types! {
+	// On Ethereum, a sync committee period spans 8192 slots, approximately 27 hours (or 256 epochs).
+	// We retain headers for 20 sync committee periods, equating to about 3 weeks. Headers older
+	// than this period are pruned.
 	pub const MaxExecutionHeadersToKeep: u32 = 8192 * 20;
 }
 

diff --git a/system-parachains/bridge-hubs/bridge-hub-polkadot/src/bridge_to_ethereum_config.rs b/system-parachains/bridge-hubs/bridge-hub-polkadot/src/bridge_to_ethereum_config.rs
@@ -139,6 +139,9 @@ parameter_types! {
 }
 
 parameter_types! {
+	// On Ethereum, a sync committee period spans 8192 slots, approximately 27 hours (or 256 epochs).
+	// We retain headers for 20 sync committee periods, equating to about 3 weeks. Headers older
+	// than this period are pruned.
 	pub const MaxExecutionHeadersToKeep: u32 = 8192 * 20;
 }