Does anyone know if there's a way to configure Envoy as a caching forward proxy? I've been trying to come to a config that would do that by following the samples and documentation for: dynamic_forward_proxy_filter cache_filter, connectmatcher
My current config is this but it doesn't seems to be doing the caching and I'm not sure if caching is possible with HTTP CONNECT / tunnel .
admin: address: socket_address: protocol: TCP address: 127.0.0.1 port_value: 9901 layered_runtime: layers: - name: static-layer static_layer: envoy.reloadable_features.allow_multiple_dns_addresses: true envoy.reloadable_features.conn_pool_new_stream_with_early_data_and_http3: true envoy.reloadable_features.http1_use_balsa_parser: true envoy.reloadable_features.http2_use_oghttp2: true envoy.reloadable_features.http3_sends_early_data: true envoy.reloadable_features.postpone_h3_client_connect_to_next_loop: true envoy.resource_limits.listener.proxy.connection_limit: 1000 overload.global_downstream_max_connections: 1000 static_resources: clusters: - name: dynamic_forward_proxy_cluster connect_timeout: 2s dns_lookup_family: ALL lb_policy: CLUSTER_PROVIDED cluster_type: name: envoy.clusters.dynamic_forward_proxy typed_config: '@type': type.googleapis.com/envoy.extensions.clusters.dynamic_forward_proxy.v3.ClusterConfig allow_coalesced_connections: true dns_cache_config: name: dynamic_forward_proxy_cache_config dns_lookup_family: ALL listeners: - name: dynamic_forward_proxy_upgrade filter_chains: - filters: - name: envoy.filters.network.http_connection_manager typed_config: '@type': type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager codec_type: AUTO http_filters: - name: envoy.filters.http.cache typed_config: "@type": type.googleapis.com/envoy.extensions.filters.http.cache.v3.CacheConfig typed_config: "@type": type.googleapis.com/envoy.extensions.http.cache.simple_http_cache.v3.SimpleHttpCacheConfig - name: envoy.filters.http.dynamic_forward_proxy typed_config: '@type': type.googleapis.com/envoy.extensions.filters.http.dynamic_forward_proxy.v3.FilterConfig dns_cache_config: name: dynamic_forward_proxy_cache_config dns_lookup_family: ALL - name: envoy.filters.http.router typed_config: '@type': type.googleapis.com/envoy.extensions.filters.http.router.v3.Router access_log: - name: envoy.access_loggers.file typed_config: '@type': type.googleapis.com/envoy.extensions.access_loggers.file.v3.FileAccessLog path: "/var/log/envoy/access.log" http2_protocol_options: allow_connect: true http3_protocol_options: allow_extended_connect: true route_config: name: local_route virtual_hosts: - name: local_service domains: - '*' routes: - match: prefix: / route: cluster: dynamic_forward_proxy_cluster - match: connect_matcher: {} route: cluster: dynamic_forward_proxy_cluster upgrade_configs: - upgrade_type: CONNECT connect_config: {} stat_prefix: dynamic_forward_proxy_upgrade address: socket_address: address: 0.0.0.0 port_value: 3128 traffic_direction: OUTBOUND 