cosmos-sdk/store/v2/multi/cache_store.go

package root

import (
	"github.com/cosmos/cosmos-sdk/store/cachekv"
	types "github.com/cosmos/cosmos-sdk/store/v2"
)

// GetKVStore implements BasicMultiStore.
func (cs *cacheStore) GetKVStore(skey types.StoreKey) types.KVStore {
	key := skey.Name()
	sub, has := cs.substores[key]
	if !has {
		sub = cachekv.NewStore(cs.source.GetKVStore(skey))
		cs.substores[key] = sub
	}
	// Wrap with trace/listen if needed. Note: we don't cache this, so users must get a new substore after
	// modifying tracers/listeners.
	return cs.wrapTraceListen(sub, skey)
}

// Write implements CacheMultiStore.
func (cs *cacheStore) Write() {
	for _, sub := range cs.substores {
		sub.Write()
	}
}

// CacheMultiStore implements BasicMultiStore.
// This recursively wraps the CacheMultiStore in another cache store.
func (cs *cacheStore) CacheMultiStore() types.CacheMultiStore {
	return &cacheStore{
		source:           cs,
		substores:        map[string]types.CacheKVStore{},
		traceListenMixin: newTraceListenMixin(),
	}
}