- create a new redis .conf file
$ cp /etc/redis.conf /etc/redis-xxx.conf
- edit /etc/redis-xxx.conf, illustrated as below
...
-- show running queries (pre 9.2) | |
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query | |
FROM pg_stat_activity | |
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' | |
ORDER BY query_start desc; | |
-- show running queries (9.2) | |
SELECT pid, age(clock_timestamp(), query_start), usename, query | |
FROM pg_stat_activity | |
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' |
import java.io.IOException; | |
import java.util.Properties; | |
import kafka.server.KafkaConfig; | |
import kafka.server.KafkaServerStartable; | |
public class KafkaLocal { | |
public KafkaServerStartable kafka; | |
public ZooKeeperLocal zookeeper; |
scala> import shapeless._, record._ | |
import shapeless._ | |
import record._ | |
scala> case class Person(name: String, address: String, age: Int) | |
defined class Person | |
scala> val joe = Person("Joe", "Brighton", 33) | |
joe: Person = Person(Joe,Brighton,33) |
$ cp /etc/redis.conf /etc/redis-xxx.conf
...
package akka.http.scaladsl | |
import java.io.File | |
import akka.http.scaladsl.unmarshalling.Unmarshal | |
import akka.util.ByteString | |
import scala.concurrent.duration._ | |
import akka.actor.ActorSystem |
Copyright © 2016-2018 Fantasyland Institute of Learning. All rights reserved.
A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.
val square : Int => Int = x => x * x