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85 lines
3.7 KiB
85 lines
3.7 KiB
syntax = "proto3"; |
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package envoy.extensions.clusters.redis.v3; |
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import "google/protobuf/duration.proto"; |
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import "google/protobuf/wrappers.proto"; |
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import "udpa/annotations/status.proto"; |
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import "udpa/annotations/versioning.proto"; |
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import "validate/validate.proto"; |
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option java_package = "io.envoyproxy.envoy.extensions.clusters.redis.v3"; |
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option java_outer_classname = "RedisClusterProto"; |
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option java_multiple_files = true; |
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option (udpa.annotations.file_status).package_version_status = ACTIVE; |
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// [#protodoc-title: Redis Cluster Configuration] |
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// This cluster adds support for `Redis Cluster <https://redis.io/topics/cluster-spec>`_, as part |
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// of :ref:`Envoy's support for Redis Cluster <arch_overview_redis>`. |
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// |
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// Redis Cluster is an extension of Redis which supports sharding and high availability (where a |
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// shard that loses its primary fails over to a replica, and designates it as the new primary). |
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// However, as there is no unified frontend or proxy service in front of Redis Cluster, the client |
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// (in this case Envoy) must locally maintain the state of the Redis Cluster, specifically the |
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// topology. A random node in the cluster is queried for the topology using the `CLUSTER SLOTS |
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// command <https://redis.io/commands/cluster-slots>`_. This result is then stored locally, and |
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// updated at user-configured intervals. |
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// |
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// Additionally, if |
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// :ref:`enable_redirection<envoy_api_field_extensions.filters.network.redis_proxy.v3.RedisProxy.ConnPoolSettings.enable_redirection>` |
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// is true, then moved and ask redirection errors from upstream servers will trigger a topology |
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// refresh when they exceed a user-configured error threshold. |
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// |
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// Example: |
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// |
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// .. code-block:: yaml |
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// |
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// name: name |
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// connect_timeout: 0.25s |
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// dns_lookup_family: V4_ONLY |
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// hosts: |
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// - socket_address: |
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// address: foo.bar.com |
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// port_value: 22120 |
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// cluster_type: |
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// name: envoy.clusters.redis |
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// typed_config: |
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// "@type": type.googleapis.com/google.protobuf.Struct |
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// value: |
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// cluster_refresh_rate: 30s |
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// cluster_refresh_timeout: 0.5s |
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// redirect_refresh_interval: 10s |
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// redirect_refresh_threshold: 10 |
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// [#extension: envoy.clusters.redis] |
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// [#next-free-field: 7] |
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message RedisClusterConfig { |
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option (udpa.annotations.versioning).previous_message_type = |
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"envoy.config.cluster.redis.RedisClusterConfig"; |
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// Interval between successive topology refresh requests. If not set, this defaults to 5s. |
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google.protobuf.Duration cluster_refresh_rate = 1 [(validate.rules).duration = {gt {}}]; |
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// Timeout for topology refresh request. If not set, this defaults to 3s. |
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google.protobuf.Duration cluster_refresh_timeout = 2 [(validate.rules).duration = {gt {}}]; |
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// The minimum interval that must pass after triggering a topology refresh request before a new |
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// request can possibly be triggered again. Any errors received during one of these |
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// time intervals are ignored. If not set, this defaults to 5s. |
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google.protobuf.Duration redirect_refresh_interval = 3; |
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// The number of redirection errors that must be received before |
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// triggering a topology refresh request. If not set, this defaults to 5. |
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// If this is set to 0, topology refresh after redirect is disabled. |
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google.protobuf.UInt32Value redirect_refresh_threshold = 4; |
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// The number of failures that must be received before triggering a topology refresh request. |
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// If not set, this defaults to 0, which disables the topology refresh due to failure. |
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uint32 failure_refresh_threshold = 5; |
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// The number of hosts became degraded or unhealthy before triggering a topology refresh request. |
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// If not set, this defaults to 0, which disables the topology refresh due to degraded or |
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// unhealthy host. |
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uint32 host_degraded_refresh_threshold = 6; |
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}
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