Improve cache config and documentation

Author: zc-devs

docs/getting_started.md

@@ -30,11 +30,11 @@ running as a Container or as a Systemd service.
 | `APPEND_SLASH_FOR_POSSIBLE_DIRECTORY` | No        | `true`, `false`              | `false`   | Flag enabling the return a 302 with a `/` appended to the path. This is independent of the behavior selected in `ALLOW_DIRECTORY_LIST` or `PROVIDE_INDEX_PAGE`.                                                                                                                                                                                                                                                                                       |
 | `DIRECTORY_LISTING_PATH_PREFIX`       | No        |                              |           | In `ALLOW_DIRECTORY_LIST=true` mode [adds defined prefix to links](#configuring-directory-listing)                                                                                                                                                                                                                                                                                                                                                    |
 | `DNS_RESOLVERS`                       | No        |                              |           | DNS resolvers (separated by single spaces) to configure NGINX with                                                                                                                                                                                                                                                                                                                                                                                    |
-| `PROXY_CACHE_MAX_SIZE`                | No        |                              |           | Limits cache size                                                                                                                                                                                                                                                                                                                                                                                                                                     |
-| `PROXY_CACHE_INACTIVE`                | No        |                              |           | Cached data that are not accessed during the time specified by the parameter get removed from the cache regardless of their freshness                                                                                                                                                                                                                                                                                                                 |
-| `PROXY_CACHE_VALID_OK`                | No        |                              |           | Sets caching time for response code 200 and 302                                                                                                                                                                                                                                                                                                                                                                                                       |
-| `PROXY_CACHE_VALID_NOTFOUND`          | No        |                              |           | Sets caching time for response code 404                                                                                                                                                                                                                                                                                                                                                                                                               |
-| `PROXY_CACHE_VALID_FORBIDDEN`         | No        |                              |           | Sets caching time for response code 403                                                                                                                                                                                                                                                                                                                                                                                                               |
+| `PROXY_CACHE_MAX_SIZE`                | No        |                              | `10g`     | Limits cache size                                                                                                                                                                                                                                                                                                                                                                                                                                     |
+| `PROXY_CACHE_INACTIVE`                | No        |                              | `60m`     | Cached data that are not accessed during the time specified by the parameter get removed from the cache regardless of their freshness                                                                                                                                                                                                                                                                                                                 |
+| `PROXY_CACHE_VALID_OK`                | No        |                              | `1h`      | Sets caching time for response code 200 and 302                                                                                                                                                                                                                                                                                                                                                                                                       |
+| `PROXY_CACHE_VALID_NOTFOUND`          | No        |                              | `1m`      | Sets caching time for response code 404                                                                                                                                                                                                                                                                                                                                                                                                               |
+| `PROXY_CACHE_VALID_FORBIDDEN`         | No        |                              | `30s`     | Sets caching time for response code 403                                                                                                                                                                                                                                                                                                                                                                                                               |
 | `PROVIDE_INDEX_PAGE`                  | No        | `true`, `false`              | `false`   | Flag which returns the index page if there is one when requesting a directory. Cannot be enabled with `ALLOW_DIRECTORY_LIST`.                                                                                                                                                                                                                                                                                                                         |
 | `JS_TRUSTED_CERT_PATH`                | No        |                              |           | Enables the `js_fetch_trusted_certificate` directive when retrieving AWS credentials and sets the path (on the container) to the specified path                                                                                                                                                                                                                                                                                                       |
 | `HEADER_PREFIXES_TO_STRIP`            | No        |                              |           | A list of HTTP header prefixes that exclude headers client responses. List should be specified in lower-case and a semicolon (;) should be used to as a deliminator between values. For example: `x-goog-;x-something-`                                                                                                                                                                                                                               |

standalone_ubuntu_oss_install.sh

@@ -364,14 +364,6 @@ http {
 
     #gzip  on;
 
-    # Settings for S3 cache
-    proxy_cache_path /var/cache/nginx/s3_proxy
-    levels=1:2
-    keys_zone=s3_cache:10m
-    max_size=10g
-    inactive=60m
-    use_temp_path=off;
-
     include /etc/nginx/conf.d/*.conf;
 }
 EOF
@@ -383,6 +375,7 @@ download "common/etc/nginx/include/awssig4.js" "/etc/nginx/include/awssig4.js"
 download "common/etc/nginx/include/s3gateway.js" "/etc/nginx/include/s3gateway.js"
 download "common/etc/nginx/include/utils.js" "/etc/nginx/include/utils.js"
 download "common/etc/nginx/templates/default.conf.template" "/etc/nginx/templates/default.conf.template"
+download "common/etc/nginx/templates/cache.conf.template" "/etc/nginx/templates/cache.conf.template"
 download "common/etc/nginx/templates/gateway/v2_headers.conf.template" "/etc/nginx/templates/gateway/v2_headers.conf.template"
 download "common/etc/nginx/templates/gateway/v2_js_vars.conf.template" "/etc/nginx/templates/gateway/v2_js_vars.conf.template"
 download "common/etc/nginx/templates/gateway/v4_headers.conf.template" "/etc/nginx/templates/gateway/v4_headers.conf.template"