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node_pruning.md

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Recommended Pruning Settings

The relayer relies on old headers and proofs constructed at past block heights to facilitate correct IBC behavior. For this reason, connected full nodes may prune old blocks once they have passed the unbonding period of the chain but not before. Not pruning at all is not necessary for a fully functional relayer, however, pruning everything will lead to many issues!

Here are the settings used to configure SDK-based full nodes (assuming 3 week unbonding period):

... --pruning=custom --pruning-keep-recent=362880 --pruning-keep-every=0 --pruning-interval=100

362880 (3*7*24*60*60 / 5 = 362880) represents a 3 week unbonding period (assuming 5 seconds per block).

Note, operators can tweak --pruning-keep-every and --pruning-interval to their liking.

<-- Relayer Terminology - Demo -->