Database > EasyCache > Overview

NHN Cloud EasyCache is a service that provides Redis (REmote DIctionary Server) in a cloud environment. You can use a highly available Redis server with simple settings.

Characteristics and Features

  • To use EasyCache, you must activate the Compute & Network service.

Replication Group

  • A Redis server that can be created instantly when you want.
  • You can use management features.

Monitoring

  • You can view the measurements to monitor the cache performance of Redis server in graphs.

Backup

  • You can perform automatic backup of memory data at specified time, once per day.
  • You can perform manual backup of memory data instantly at the time you want.
  • The data is stored in safe external storage.
  • Using the stored backup data, a new replication group can be created at any time.

Profile Configuration

  • You can manage the configuration of Redis servers with profiles.

Alarm

  • You can get notification on the event and monitoring status of replication groups.
  • You can manage the events and threshold settings for monitoring.

Event

  • You can search for and check the status of replication groups and nodes.

Glossary

Replication Group

  • A replication group is provided as Standalone and Replication types.
  • Server specification supports 2-64 GB memory.
  • You can create a replication group with virtual devices of all specifications provided by the Compute & Network service of NHN Cloud.
  • You cannot access the operating system of a replication group directly. You can access a Redis server using the assigned domain and the port that you entered when creating a replication group.
  • You can create a replication group only when you select VPC subnet in the Compute & Network service, and you can communicate with the instance of the Compute & Network service through VPC subnet.
  • A replication group is disconnected from external networks, except for the user's subnet. If connection from an external network is required, floating IP must be attached.
  • If you are using the Compute & Network service, you can configure a subnet for connection when you create a replication group.
  • Network connection is enabled between the replication group and the instance in the connected subnet.
  • A master is a general instance that allows read and write operations.
  • A replica is an instance that replicates a master in real time.

Availability Zone

  • A logical area where a replication group is created.

Floating IP

  • A dynamic IP used for communication with external networks.
  • To use a floating IP, an internet gateway must be associated with the user's VPC subnet attached to the instance to be configured.
  • The Redis of instance associated with a floating IP is accessible from external network through a public domain.
  • You will be charged for a floating IP as soon as it is created, apart from Redis instances.

High Availability (Automatic HA)

  • If you use the HA feature, the service monitors the master of replication group, detects failure, and performs failover automatically. This feature can reduce the service downtime as much as possible.

Profile

  • Configuration of the Redis server.
  • You can set either the default profile or a user profile.
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