Merge pull request #18087 from karalabe/trie-read-cacher

cmd/geth/main.go

cmd/geth/usage.go

cmd/utils/flags.go

core/blockchain.go

core/state/database.go

eth/api.go

eth/api_tracer.go

eth/backend.go

eth/config.go

eth/gen_config.go

light/postprocess.go

tests/block_test_util.go

trie/database.go

trie/iterator_test.go

trie/trie_test.go

vendor/github.com/allegro/bigcache/LICENSE

vendor/github.com/allegro/bigcache/README.md

vendor/github.com/allegro/bigcache/bigcache.go

vendor/github.com/allegro/bigcache/bytes.go

vendor/github.com/allegro/bigcache/bytes_appengine.go