Merge pull request #242 from oasisprotocol/yawning/feature/231

feat(indexer): Implement a response cache

go.mod

@@ -3,6 +3,7 @@ module github.com/oasisprotocol/emerald-web3-gateway
 go 1.17
 
 require (
+	github.com/dgraph-io/ristretto v0.1.0
 	github.com/ethereum/go-ethereum v1.10.10-0.20211005163353-57ff2dee06a1
 	github.com/fxamacker/cbor/v2 v2.4.0
 	github.com/gorilla/mux v1.8.0
@@ -30,6 +31,7 @@ require (
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/deckarep/golang-set v0.0.0-20180603214616-504e848d77ea // indirect
+	github.com/dustin/go-humanize v1.0.0 // indirect
 	github.com/eapache/channels v1.1.0 // indirect
 	github.com/eapache/queue v1.1.0 // indirect
 	github.com/fatih/color v1.13.0 // indirect
@@ -38,6 +40,7 @@ require (
 	github.com/go-logfmt/logfmt v0.5.1 // indirect
 	github.com/go-ole/go-ole v1.2.1 // indirect
 	github.com/go-stack/stack v1.8.0 // indirect
+	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
 	github.com/hashicorp/go-hclog v1.1.0 // indirect
@@ -95,6 +98,7 @@ require (
 	google.golang.org/genproto v0.0.0-20211208223120-3a66f561d7aa // indirect
 	google.golang.org/grpc/security/advancedtls v0.0.0-20200902210233-8630cac324bf // indirect
 	google.golang.org/protobuf v1.27.1 // indirect
+	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
 	gopkg.in/ini.v1 v1.66.2 // indirect
 	gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect