webserver

Webserver example

It shows:

• In-memory cache
• NATS wrapper with In-memory cache
• Redis cache
• Invalidation by cache type and by tag

Start

Prepare

# Start NATS
docker run -d --name nats -p 4222:4222 -p 6222:6222 -p 8222:8222 nats
# Start Redis
docker run -d --name redis -p6379:6379 redis

Start several instances on different ports

go run *.go :8080
go run *.go :8081
...

Testing

Get data from store

time curl http://127.0.0.1:8080/orders | jq
# ~1 sec
time curl http://127.0.0.1:8080/goods | jq
# ~1 sec

Playing with in-memory cache

time curl http://127.0.0.1:8080/orders/inmemory | jq
# ~1 sec
time curl http://127.0.0.1:8081/orders/inmemory | jq
# ~1 sec
time curl http://127.0.0.1:8080/orders/inmemory | jq
# ~0.01 sec
time curl http://127.0.0.1:8081/orders/inmemory | jq
# ~0.01 sec
### Invalidation
time curl http://127.0.0.1:8080/invalidate/orders/inmemory
# OK
time curl http://127.0.0.1:8081/orders/inmemory | jq
# ~0.01 sec
time curl http://127.0.0.1:8080/orders/inmemory | jq
# ~1 sec

Playing with in-memory + NATS

time curl http://127.0.0.1:8080/orders/nats | jq
# ~1 sec
time curl http://127.0.0.1:8081/orders/nats | jq
# ~1 sec
time curl http://127.0.0.1:8080/orders/nats | jq
# ~0.01 sec
time curl http://127.0.0.1:8081/orders/nats | jq
# ~0.01 sec
### Invalidation
time curl http://127.0.0.1:8080/invalidate/orders/nats
# OK
time curl http://127.0.0.1:8081/orders/nats | jq
# ~1 sec
time curl http://127.0.0.1:8080/orders/nats | jq
# ~1 sec

Playing with Redis cache

time curl http://127.0.0.1:8080/orders/redis | jq
# ~1 sec
time curl http://127.0.0.1:8081/orders/redis | jq
# ~1 sec
time curl http://127.0.0.1:8080/orders/redis | jq
# ~0.01 sec
time curl http://127.0.0.1:8081/orders/redis | jq
# ~0.01 sec
### Invalidation
time curl http://127.0.0.1:8080/invalidate/orders/redis
# OK
time curl http://127.0.0.1:8081/orders/redis | jq
# ~1 sec
time curl http://127.0.0.1:8080/orders/redis | jq
# ~1 sec

Checking invalidation by tag

time curl http://127.0.0.1:8080/orders/inmemory | jq
# ~1 sec
time curl http://127.0.0.1:8080/goods/inmemory | jq
# ~1 sec
time curl http://127.0.0.1:8080/orders/inmemory | jq
# ~0.01 sec
time curl http://127.0.0.1:8080/goods/inmemory | jq
# ~0.01 sec
### Invalidation
#### Tag: orders
time curl http://127.0.0.1:8080/invalidate/tag/orders
# OK
time curl http://127.0.0.1:8080/orders/inmemory | jq
# ~1 sec
time curl http://127.0.0.1:8080/goods/inmemory | jq
# ~0.01 sec
#### Tag: goods (Tag exists in Orders and Goods caches)
time curl http://127.0.0.1:8080/invalidate/tag/goods
# OK
time curl http://127.0.0.1:8080/orders/inmemory | jq
# ~1 sec
time curl http://127.0.0.1:8080/goods/inmemory | jq
# ~1 sec