+docker-compose up -d kafka-ui
+
+docker-compose exec -T cli bash << 'EOF'
+echo "Creating topic with 3 partitions..."
+kafka-topics --bootstrap-server kafka:9092 --delete --if-exists --topic test
+# tag::createtopic[]
+kafka-topics --bootstrap-server kafka:9092 --create --topic test --partitions 3
+# end::createtopic[]
+kafka-topics --bootstrap-server kafka:9092 --describe --topic test
+EOF
+
+docker-compose up -d consumer
+
+docker-compose up -d producer
+sleep 10
+http :8081/seen
+sleep 1
+http :8081/seen
+sleep 1
+http :8081/seen
+sleep 1
+http :8081/seen
+
+docker-compose exec -T cli bash << 'EOF'
+echo "Altering number of partitions from 3 to 7..."
+# tag::altertopic[]
+kafka-topics --bootstrap-server kafka:9092 --alter --topic test --partitions 7
+kafka-topics --bootstrap-server kafka:9092 --describe --topic test
+# end::altertopic[]
+EOF
+
+docker-compose restart producer
+sleep 10
+http :8081/seen
+sleep 1
+http :8081/seen
+sleep 1
+http :8081/seen
+sleep 1
+http :8081/seen
+sleep 1
+http :8081/seen
+sleep 1
+http :8081/seen
+sleep 1
+http :8081/seen
+sleep 1
+http :8081/seen
+sleep 1
+http :8081/seen
+sleep 1
+http :8081/seen
+sleep 1
+http :8081/seen
+sleep 1
+http :8081/seen
+sleep 1
+http :8081/seen
+sleep 1
+http :8081/seen