docker run --rm --name redis -itp6379:6379 redis:6.2.6-alpine

mvn spring-boot:start

http --stream :8080 &
http :8080 body=Hello
http :8080 body=World

mvn spring-boot:stop

docker exec -it redis redis-cli
127.0.0.1:6379> XADD my_stream * value "Hello, World!"
# output: identity, which is message id:
"1637443677304-0"

127.0.0.1:6379> KEYS *
# output:
"my_stream"

127.0.0.1:6379> TYPE my_stream
# output:
stream

127.0.0.1:6379> XREAD STREAMS my_stream 0
# output:
1) 1) "my_stream"
   2) 1) 1) "1637443677304-0"
         2) 1) "value"
            2) "Hello, World!"

127.0.0.1:6379> XREAD STREAMS my_stream 1637443677304-0
# output:
(nil)

127.0.0.1:6379> XREAD BLOCK 5000 STREAMS my_stream 1637443677304-0
# output:
(nil)
(5.09s)

docker stop redis