Add redis support for distributed caching

vendor/github.com/alicebob/miniredis/v2/Makefile

@@ -0,0 +1,33 @@
+.PHONY: test
+test: ### Run unit tests
+	go test ./...
+
+.PHONY: testrace
+testrace: ### Run unit tests with race detector
+	go test -race ./...
+
+.PHONY: int
+int: ### Run integration tests (doesn't download redis server)
+	${MAKE} -C integration int
+
+.PHONY: ci
+ci: ### Run full tests suite (including download and compilation of proper redis server)
+	${MAKE} test
+	${MAKE} -C integration redis_src/redis-server int
+	${MAKE} testrace
+
+.PHONY: clean
+clean: ### Clean integration test files and remove compiled redis from integration/redis_src
+	${MAKE} -C integration clean
+
+.PHONY: help
+help:
+ifeq ($(UNAME), Linux)
+	@grep -P '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | \
+		awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-20s\033[0m %s\n", $$1, $$2}'
+else
+	@# this is not tested, but prepared in advance for you, Mac drivers
+	@awk -F ':.*###' '$$0 ~ FS {printf "%15s%s\n", $$1 ":", $$2}' \
+		$(MAKEFILE_LIST) | grep -v '@awk' | sort
+endif
+