redis

Type:

Available in: Cloud, Self-Managed

Use a Redis instance as a cache. The expiration can be set to zero or an empty string in order to set no expiration.

  • Common

  • Advanced

# Common config fields, showing default values
label: ""
redis:
  url: redis://:6379 # No default (required)
  prefix: "" # No default (optional)
# All config fields, showing default values
label: ""
redis:
  url: redis://:6379 # No default (required)
  kind: simple
  master: ""
  tls:
    enabled: false
    skip_cert_verify: false
    enable_renegotiation: false
    root_cas: ""
    root_cas_file: ""
    client_certs: []
  prefix: "" # No default (optional)
  default_ttl: "" # No default (optional)
  retries:
    initial_interval: 500ms
    max_interval: 1s
    max_elapsed_time: 5s

Fields

url

The URL of the target Redis server. Database is optional and is supplied as the URL path.

Type: string

# Examples

url: redis://:6379

url: redis://localhost:6379

url: redis://foousername:foopassword@redisplace:6379

url: redis://:foopassword@redisplace:6379

url: redis://localhost:6379/1

url: redis://localhost:6379/1,redis://localhost:6380/1

kind

Specifies a simple, cluster-aware, or failover-aware redis client.

Type: string

Default: "simple"

Options: simple , cluster , failover .

master

Name of the redis master when kind is failover

Type: string

Default: ""

# Examples

master: mymaster

tls

Custom TLS settings can be used to override system defaults.

Troubleshooting

Some cloud hosted instances of Redis (such as Azure Cache) might need some hand holding in order to establish stable connections. Unfortunately, it is often the case that TLS issues will manifest as generic error messages such as "i/o timeout". If you’re using TLS and are seeing connectivity problems consider setting enable_renegotiation to true, and ensuring that the server supports at least TLS version 1.2.

Type: object

tls.enabled

Whether custom TLS settings are enabled.

Type: bool

Default: false

tls.skip_cert_verify

Whether to skip server side certificate verification.

Type: bool

Default: false

tls.enable_renegotiation

Whether to allow the remote server to repeatedly request renegotiation. Enable this option if you’re seeing the error message local error: tls: no renegotiation.

Type: bool

Default: false

tls.root_cas

An optional root certificate authority to use. This is a string, representing a certificate chain from the parent trusted root certificate, to possible intermediate signing certificates, to the host certificate.

This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see Manage Secrets before adding it to your configuration.

Type: string

Default: ""

# Examples

root_cas: |-
  -----BEGIN CERTIFICATE-----
  ...
  -----END CERTIFICATE-----

tls.root_cas_file

An optional path of a root certificate authority file to use. This is a file, often with a .pem extension, containing a certificate chain from the parent trusted root certificate, to possible intermediate signing certificates, to the host certificate.

Type: string

Default: ""

# Examples

root_cas_file: ./root_cas.pem

tls.client_certs

A list of client certificates to use. For each certificate either the fields cert and key, or cert_file and key_file should be specified, but not both.

Type: array

Default: []

# Examples

client_certs:
  - cert: foo
    key: bar

client_certs:
  - cert_file: ./example.pem
    key_file: ./example.key

tls.client_certs[].cert

A plain text certificate to use.

Type: string

Default: ""

tls.client_certs[].key

A plain text certificate key to use.

This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see Manage Secrets before adding it to your configuration.

Type: string

Default: ""

tls.client_certs[].cert_file

The path of a certificate to use.

Type: string

Default: ""

tls.client_certs[].key_file

The path of a certificate key to use.

Type: string

Default: ""

tls.client_certs[].password

A plain text password for when the private key is password encrypted in PKCS#1 or PKCS#8 format. The obsolete pbeWithMD5AndDES-CBC algorithm is not supported for the PKCS#8 format.

Because the obsolete pbeWithMD5AndDES-CBC algorithm does not authenticate the ciphertext, it is vulnerable to padding oracle attacks that can let an attacker recover the plaintext.

This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see Manage Secrets before adding it to your configuration.

Type: string

Default: ""

# Examples

password: foo

password: ${KEY_PASSWORD}

prefix

An optional string to prefix item keys with in order to prevent collisions with similar services.

Type: string

default_ttl

An optional default TTL to set for items, calculated from the moment the item is cached.

Type: string

retries

Determine time intervals and cut offs for retry attempts.

Type: object

retries.initial_interval

The initial period to wait between retry attempts.

Type: string

Default: "500ms"

# Examples

initial_interval: 50ms

initial_interval: 1s

retries.max_interval

The maximum period to wait between retry attempts

Type: string

Default: "1s"

# Examples

max_interval: 5s

max_interval: 1m

retries.max_elapsed_time

The maximum overall period of time to spend on retry attempts before the request is aborted.

Type: string

Default: "5s"

# Examples

max_elapsed_time: 1m

max_elapsed_time: 1h