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redis

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 config fields, showing default values
label: ""
redis:
url: tcp://localhost:6379
prefix: ""
expiration: 24h

This cache type supports setting the TTL individually per key by using the dynamic ttl field of a cache processor or output in order to override the general TTL configured at the cache resource level.

Fields

url

The URL of the target Redis server. Database is optional and is supplied as the URL path. The scheme tcp is equivalent to redis.

Type: string
Default: "tcp://localhost:6379"

# Examples
url: :6397
url: localhost:6397
url: redis://localhost: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"

# Examples
kind: simple
kind: cluster
kind: 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
Requires version 3.45.0 or newer

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.

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.

Type: string
Default: ""

tls.client_certs[].cert_file

The path to a certificate to use.

Type: string
Default: ""

tls.client_certs[].key_file

The path of a certificate key to use.

Type: string
Default: ""

prefix

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

Type: string
Default: ""

expiration

An optional period after which cached items will expire.

Type: string
Default: "24h"

retries

The maximum number of retry attempts to make before abandoning a request.

Type: int
Default: 3

retry_period

The duration to wait between retry attempts.

Type: string
Default: "500ms"