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Vinyl Cache (Varnish) docker image

vinyl 최신버젼 다운로드

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# Vinyl Cache (Varnish Cache) Docker Container Image

[![Build Status](https://github.com/wodby/vinyl/workflows/Build%20docker%20image/badge.svg)](https://github.com/wodby/vinyl/actions)
[![Docker Pulls](https://img.shields.io/docker/pulls/wodby/vinyl.svg)](https://hub.docker.com/r/wodby/vinyl)
[![Docker Stars](https://img.shields.io/docker/stars/wodby/vinyl.svg)](https://hub.docker.com/r/wodby/vinyl)

- [Docker images](#docker-images)
- [Environment variables](#environment-variables)
- [Installed modules](#installed-modules)
- [Default behaviour](#default-behaviour)
    - [Caching rules](#caching-rules)
    - [Cache personification](#cache-personification)
    - [GeoIP](#geoip)
    - [Currency](#currency)    
    - [Flushing](#cache-flushing)
    - [Miscellaneous](#miscellaneous)
- [Config presets](#config-presets)
    - [Drupal](#drupal)
    - [WordPress](#wordpress)
- [PageSpeed downstream caching](#pagespeed-downstream-caching)        
- [Orchestration actions](#orchestration-actions)    
- [Deployment](#deployment)

## Docker Images

❗For better reliability we release images with stability tags (`wodby/vinyl:8-X.X.X`) which correspond to [git tags](https://github.com/wodby/vinyl/releases). We strongly recommend using images only with stability tags.

Overview:

- All images are based on Alpine Linux
- Base image: [wodby/alpine](https://github.com/wodby/alpine)
- [GitHub actions builds](https://github.com/wodby/vinyl/actions) 
- [Docker Hub](https://hub.docker.com/r/wodby/vinyl)
- [Helm chart](https://github.com/wodby/charts/tree/main/vinyl)

All images built for `linux/amd64` and `linux/arm64`

Supported tags and respective `Dockerfile` links:

- `8.0`, `8`, `latest` [_(Dockerfile)_](https://github.com/wodby/vinyl/tree/master/8/Dockerfile)
- `6.0`, `6` [_(Dockerfile)_](https://github.com/wodby/vinyl/tree/master/6/Dockerfile)

## Environment Variables

| Variable                                   | Default Value              | Description                                     |
|--------------------------------------------|----------------------------|-------------------------------------------------|
| `VARNISH_ALLOW_UNRESTRICTED_PURGE`         |                            | Used for ban requests as well                   |
| `VARNISH_BACKEND_BETWEEN_BYTES_TIMEOUT`    | `60s`                      |                                                 |
| `VARNISH_BACKEND_CONNECT_TIMEOUT`          | `3.5s`                     |                                                 |
| `VARNISH_BACKEND_FIRST_BYTE_TIMEOUT`       | `60s`                      |                                                 |
| `VARNISH_BACKEND_GRACE`                    | `2m`                       |                                                 |
| `VARNISH_BACKEND_HOST`                     |                            | Mandatory                                       |
| `VARNISH_BACKEND_PORT`                     | `80`                       |                                                 |
| `VARNISH_CACHE_PER_COUNTRY`                |                            | Separate caches based on [country code](#geoip) |
| `VARNISH_CACHE_PER_CURRENCY`               |                            | Separate caches based on [currency](#currency)  |
| `VARNISH_CURRENCY_EUR_COUNTRY_CODES`       |                            | See [currencies](#currency)                     |
| `VARNISH_CURRENCY_USD_COUNTRY_CODES`       |                            | See [currencies](#currency)                     |
| `VARNISH_BIG_FILES_SIZE`                   | `10485760`                 | 10MB                                            |
| `VARNISH_BIG_FILES_TTL`                    | `120s`                     |                                                 |
| `VARNISH_CACHE_STATIC_FILES`               |                            |                                                 |
| `VARNISH_CONFIG_PRESET`                    |                            |                                                 |
| `VARNISH_DEFAULT_TTL`                      | `120s`                     |                                                 |
| `VARNISH_ERRORS_GRACE`                     | `15s`                      |                                                 |
| `VARNISH_PURGE_EXTERNAL_REQUEST_HEADER`    |                            |                                                 |
| `VARNISH_KEEP_ALL_COOKIES`                 |                            |                                                 |
| `VARNISH_KEEP_ALL_PARAMS`                  |                            |                                                 |
| `VARNISH_IMPORT_MODULES`                   |                            | Separated by comma                              |
| `VARNISH_MOBILE_DISABLE_CASH`              |                            |                                                 |
| `VARNISH_MOBILE_SEPARATE_CASH`             |                            |                                                 |
| `VARNISH_MOBILE_USER_AGENT`                |                            | See default value below                         |
| `VARNISH_PIPE_CLOSE_CONNECTION`            |                            |                                                 |
| `VARNISH_PURGE_KEY`                        |                            | Randomly generated if missing                   |
| `VARNISH_SECONDARY_STORAGE_CONDITION`      |                            | Must be valid VCL                               |
| `VARNISH_SECRET`                           |                            | Generated automatically if missing              |
| `VARNISH_STATIC_FILES`                     |                            | See default value below                         |
| `VARNISH_STATIC_TTL`                       | `86400`                    | In seconds                                      |
| `VARNISH_STRIP_COOKIES`                    |                            | See default value below                         |
| `VARNISH_STRIP_PARAMS`                     |                            | See default value below                         |
| `VARNISH_STRIP_ALL_PARAMS`                 |                            | Ignored if `$VARNISH_KEEP_ALL_PARAMS` is set    |
| `VARNISH_PAGESPEED_SECRET_KEY`             |                            | Should be used if mod_pagespeed is enabled      |
| `VARNISHD_DEFAULT_TTL`                     | `120`                      |                                                 |
| `VARNISHD_MEMORY_SIZE`                     | `64m`                      |                                                 |
| `VARNISHD_PARAM_BAN_LURKER_AGE`            | `60.000`                   |                                                 |
| `VARNISHD_PARAM_BAN_LURKER_BATCH`          | `1000`                     |                                                 |
| `VARNISHD_PARAM_BAN_LURKER_SLEEP`          | `0.010`                    |                                                 |
| `VARNISHD_PARAM_BETWEEN_BYTES_TIMEOUT`     | `60.000`                   |                                                 |
| `VARNISHD_PARAM_CONNECT_TIMEOUT`           | `3.500`                    |                                                 |
| `VARNISHD_PARAM_DEFAULT_GRACE`             | `10.000`                   |                                                 |
| `VARNISHD_PARAM_DEFAULT_KEEP`              | `0.000`                    |                                                 |
| `VARNISHD_PARAM_DEFAULT_TTL`               | `120.000`                  |                                                 |
| `VARNISHD_PARAM_FETCH_CHUNKSIZE`           | `16k`                      |                                                 |
| `VARNISHD_PARAM_FIRST_BYTE_TIMEOUT`        | `60.000`                   |                                                 |
| `VARNISHD_PARAM_GZIP_BUFFER`               | `32k`                      |                                                 |
| `VARNISHD_PARAM_GZIP_LEVEL`                | `6`                        |                                                 |
| `VARNISHD_PARAM_GZIP_MEMLEVEL`             | `8`                        |                                                 |
| `VARNISHD_PARAM_HTTP_GZIP_SUPPORT`         | `on`                       |                                                 |
| `VARNISHD_PARAM_HTTP_MAX_HDR`              | `64`                       |                                                 |
| `VARNISHD_PARAM_HTTP_REQ_HDR_LEN`          | `8k`                       |                                                 |
| `VARNISHD_PARAM_HTTP_REQ_SIZE`             | `32k`                      |                                                 |
| `VARNISHD_PARAM_HTTP_RESP_HDR_LEN`         | `8k`                       |                                                 |
| `VARNISHD_PARAM_HTTP_RESP_SIZE`            | `32k`                      |                                                 |
| `VARNISHD_PARAM_IDLE_SEND_TIMEOUT`         | `60.000`                   |                                                 |
| `VARNISHD_PARAM_MAX_ESI_DEPTH`             | `5`                        |                                                 |
| `VARNISHD_PARAM_MAX_RESTARTS`              | `4`                        |                                                 |
| `VARNISHD_PARAM_MAX_RETRIES`               | `4`                        |                                                 |
| `VARNISHD_PARAM_NUKE_LIMIT`                | `50`                       |                                                 |
| `VARNISHD_PARAM_PING_INTERVAL`             | `3`                        |                                                 |
| `VARNISHD_PARAM_PIPE_TIMEOUT`              | `60.000`                   |                                                 |
| `VARNISHD_PARAM_POOL_REQ`                  | `10,100,10`                |                                                 |
| `VARNISHD_PARAM_POOL_SESS`                 | `10,100,10`                |                                                 |
| `VARNISHD_PARAM_PREFER_IPV6`               | `off`                      |                                                 |
| `VARNISHD_PARAM_RUSH_EXPONENT`             | `3`                        |                                                 |
| `VARNISHD_PARAM_SEND_TIMEOUT`              | `600`                      |                                                 |
| `VARNISHD_PARAM_SHORTLIVED`                | `10.000`                   |                                                 |
| `VARNISHD_PARAM_TCP_KEEPALIVE_INTVL`       | `75.000`                   |                                                 |
| `VARNISHD_PARAM_TCP_KEEPALIVE_PROBES`      | `8`                        |                                                 |
| `VARNISHD_PARAM_TCP_KEEPALIVE_TIME`        | `7200.000`                 |                                                 |
| `VARNISHD_PARAM_THREAD_POOL_ADD_DELAY`     | `0.000`                    |                                                 |
| `VARNISHD_PARAM_THREAD_POOL_DESTROY_DELAY` | `1.000`                    |                                                 |
| `VARNISHD_PARAM_THREAD_POOL_FAIL_DELAY`    | `0.200`                    |                                                 |
| `VARNISHD_PARAM_THREAD_POOL_MAX`           | `5000`                     |                                                 |
| `VARNISHD_PARAM_THREAD_POOL_MIN`           | `100`                      |                                                 |
| `VARNISHD_PARAM_THREAD_POOL_STACK`         | `48k`                      |                                                 |
| `VARNISHD_PARAM_THREAD_POOL_TIMEOUT`       | `300.000`                  |                                                 |
| `VARNISHD_PARAM_THREAD_POOLS`              | `2`                        |                                                 |
| `VARNISHD_PARAM_THREAD_QUEUE_LIMIT`        | `20`                       |                                                 |
| `VARNISHD_PARAM_TIMEOUT_IDLE`              | `5.000`                    |                                                 |
| `VARNISHD_PARAM_TIMEOUT_LINGER`            | `0.050`                    |                                                 |
| `VARNISHD_PARAM_VSL_BUFFER`                | `4k`                       |                                                 |
| `VARNISHD_PARAM_VSL_RECLEN`                | `255b`                     |                                                 |
| `VARNISHD_PARAM_VSL_SPACE`                 | `80M`                      |                                                 |
| `VARNISHD_PARAM_VSM_SPACE`                 | `1M`                       |                                                 |
| `VARNISHD_PARAM_WORKSPACE_BACKEND`         | `64k`                      |                                                 |
| `VARNISHD_PARAM_WORKSPACE_CLIENT`          | `64k`                      |                                                 |
| `VARNISHD_PARAM_WORKSPACE_SESSION`         | `0.50k`                    |                                                 |
| `VARNISHD_PARAM_WORKSPACE_THREAD`          | `2k`                       |                                                 |
| `VARNISHD_SECONDARY_STORAGE`               |                            | See example below                               |
| `VARNISHD_SECRET_FILE`                     | `/etc/varnish/secret`      |                                                 |
| `VARNISHD_VCL_SCRIPT`                      | `/etc/varnish/default.vcl` |                                                 |

###### `VARNISH_MOBILE_USER_AGENT`:

Backslashes must be escaped as `\\`

###### `VARNISH_STATIC_FILES`:

```
asc|doc|xls|ppt|csv|svg|jpg|jpeg|gif|png|ico|css|zip|tgz|gz|rar|bz2|pdf|txt|tar|wav|bmp|rtf|js|flv|swf|html|htm|webp
```

###### `VARNISH_STRIP_COOKIES`

Ignored if `$VARNISH_KEEP_ALL_COOKIES` is set

```
__[a-z]+|wooTracker|VCKEY-[a-zA-Z0-9-_]+
```

###### `VARNISH_STRIP_PARAMS`

Ignored if `$VARNISH_KEEP_ALL_PARAMS` is set

```
utm_[a-z]+|gclid|cx|ie|cof|siteurl|fbclid
```

###### `VARNISH_SECONDARY_STORAGE_CONDITION`:

Allows defining custom conditions for storing the cache object in the secondary storage; as it is injected into an `if` it has to contain valid VCL syntax for it.

Please note that `VARNISHD_SECONDARY_STORAGE` must be defined as well, otherwise the secondary storage would not be available.

Example: instruct varnish to store in the secondary storage from the backend via custom header `X-Cache-Bin`:

```
VARNISH_STORAGE_CONDITION='beresp.http.x-cache-bin = "secondary"'
```

## Installed Modules

| Module       | Varnish 6.0 | Varnish 8.0 |
|--------------|-------------|-------------|
| [geoip]      | 1.0.3       |             |
| [geoip2]     |             | latest      |
| [digest]     | 1.0.3       | 1.0.3       |
| [cookie]     | 6.0 latest  | 0.27.0      |
| [vsthrottle] | 6.0 latest  | 0.27.0      |
| [header]     | 6.0 latest  | 0.27.0      |
| [saintmode]  | 6.0 latest  | 0.27.0      |
| [softpurge]  | 6.0 latest  | 0.27.0      |
| [tcp]        | 6.0 latest  | 0.27.0      |
| [var]        | 6.0 latest  | 0.27.0      |
| [xkey]       | 6.0 latest  | 0.27.0      |
| bodyaccess   | 6.0 latest  | 0.27.0      |

Modules can be imported as `$VARNISH_IMPORT_MODULES=xkey,softpurge`.

## Default Behaviour

### Caching Rules

- Only GET or HEAD requests are cached
- Backend responses with `Set-Cookie` header not cached
- Static files (see `$VARNISH_STATIC_FILES`) not cached by default, set `$VARNISH_CACHE_STATIC_FILES` to cache
- Error pages 404 and >500 not cached with grace period `$VARNISH_ERRORS_GRACE`
- All AJAX requests not cached
- Big files (larger than `$VARNISH_BIG_FILES_SIZE`) not cached

### Cache Personification

White-listed cookies starting with `VCKEY-` followed by alphanumeric characters, underscores or hyphens are used to build cache hash. You can use such cookies to personify cache by a certain criteria, e.g. set `VCKEY-lang` to `en` or `fr` to cache different versions for English and French users.

On your backend you should check whether `VCKEY-` cookie exists, if it does generate a personified version of a page and do not set cookie again, otherwise it won't be cached on Varnish.

### GeoIP

We identify client's two-letter country code ([ISO 3166](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2)) and pass it to a backend in `X-Country-Code` header. If Varnish could not recognize the country the default value will be `Unknown`. You can optionally uniquify cache per country by setting `$VARNISH_CACHE_PER_COUNTRY=1`. We use GeoLite database from MaxMind.

If we see CloudFlare country code header we use it instead.

### Currency

We use [the country code](#geoip) to identify the currencxy and pass it to a backend in `X-Currency` header. You can optionally uniquify cache per currency by setting `$VARNISH_CACHE_PER_CURRENCY=1`.

We use data from [IBAN](https://www.iban.com/currency-codes) to identify which country uses which currency, currently only USD and EUR supported.

Country codes for USD (`$VARNISH_CURRENCY_USD_COUNTRY_CODES`): 
```
US|AS|BQ|IO|EC|SV|GU|HT|MH|FM|MP|PA|PW|PR|TL|TC|UM|VG|VI
```

Country codes for EUR (`$VARNISH_CURRENCY_EUR_COUNTRY_CODES`):
```
AD|AT|BE|CY|EE|FI|FR|GF|TF|DE|GP|GR|VA|IE|IT|LV|LT|LU|MT|MQ|YT|MC|ME|NL|PT|RE|BL|MF|PM|SM|SK|SI|ES|CE|CH|AX
```

### Cache Flushing

- Purge and ban requests both use Varnish's `ban` method to flush cache and restricted by the purge key `$VARNISH_PURGE_KEY` (generated if missing). Use header `X-VC-Purge-Key` to pass the key for purge/ban requests
- Purge requests look up for exact match but ignores query params, you can change the method by setting `X-VC-Purge-Method` to `regex` or `exact` (respects query params)
- Additionally for ban requests cache flushed by `Cache-Tags` header (Drupal's case)
- If you want to allow unrestricted purge/ban requests in internal network specify a header via `$VARNISH_PURGE_EXTERNAL_REQUEST_HEADER` that exists only for external requests (e.g. `X-Real-IP`). If specified header is not set Varnish will skip purge key check

### Miscellaneous

- Header `X-VC-Cache` set to `HIT` or `MISS` when varnish delivers content
- Cache hash includes host (or ip) and request protocol
- Varnish adds client's IP added to `X-Forwarded-For`
- [Websocket requests supported](https://varnish-cache.org/docs/4.1/users-guide/vcl-example-websockets.html)
- Query params (`$VARNISH_STRIP_PARAMS`) stripped unless `$VARNISH_KEEP_ALL_PARAMS` is set
- Cookies (`$VARNISH_STRIP_COOKIES`) stripped unless `$VARNISH_KEEP_ALL_COOKIES` is set
- Hashes and trailing `?` stripped from URL before passing to backend
- By default, cache mobile devices is identical. You can separate it by setting `$VARNISH_MOBILE_SEPARATE_CASH` or completely disable by setting `$VARNISH_MOBILE_DISABLE_CASH`. Regex `$VARNISH_MOBILE_USER_AGENT` used to identify mobile devices by `User-Agent` header 
- Set one of the following headers from the backend to disable caching for a page: 
    ```
    X-VC-Cacheable: NO
    Cache-control: private
    Cache-control: no-cache
    ```
- Set `X-VC-Debug` to show cache hashes and pass through header `X-VC-DebugMessage`
- `BigPipe` supported
- Secondary storage can be defined via `$VARNISH_STORAGE_CONDITION`
- `./vchealthz` is a liveness endpoint with 204 response codes

## Config Presets

You can use one of the following config presets to extend the default behaviour:

### Drupal

Add `VARNISH_CONFIG_PRESET=drupal` to use this preset.

- Pages matching `$VARNISH_DRUPAL_EXCLUDE_URLS` will not be cached
- If a cookie from `$VARNISH_DRUPAL_PRESERVED_COOKIES` is set a page will not be cached. All other cookies stripped

###### `VARNISH_DRUPAL_EXCLUDE_URLS`:

Backslashes must be escaped as `\\`

```
^(/update\\.php|/([a-z]{2}/)?admin|/([a-z]{2}/)?admin/.*|/([a-z]{2}/)?system/files/.*|/([a-z]{2}/)?flag/.*|.*/ajax/.*|.*/ahah/.*)$
```

###### `VARNISH_DRUPAL_PRESERVED_COOKIES`:

Not affected by `$VARNISH_KEEP_ALL_COOKIES`

```
SESS[a-z0-9]+|SSESS[a-z0-9]+|NO_CACHE
```

### WordPress

Add `VARNISH_CONFIG_PRESET=wordpress` to use this preset.

- Requests with `ak_action|app-download` query params or `akm_mobile` cookie not cached (Jetpack plugin)
- Strips `replytocom=` query param
- Use `$VARNISH_WP_ADMIN_SUBDOMAIN` if you have your admin on a subdomain to disable caching 
- If a cookie from `$VARNISH_WP_PRESERVED_COOKIES` is set a page will not be cached. All other cookies stripped

###### `VARNISH_WP_PRESERVED_COOKIES`:

Not affected by `$VARNISH_KEEP_ALL_COOKIES`

## PageSpeed Downstream Caching

This image contains implementation for modpagespeed downstream caching as described at https://www.modpagespeed.com/doc/downstream-caching. You can enable this behavior by specifying `$VARNISH_PAGESPEED_SECRET_KEY` to the value that matches `DownstreamCacheRebeaconingKey` in your Nginx/Apache config. This value will be used as `PS-ShouldBeacon` for 5% of hits and 25% of misses. Also, when static files cache enabled on Varnish, `PS-CapabilityList`  will be set to `fully general optimizations only` to [unify behavior for all browsers](https://www.modpagespeed.com/doc/downstream-caching#ps-capabilitylist).

## Orchestration Actions

```
make COMMAND [params ...]

commands:
    check-ready [host max_try wait_seconds delay_seconds]
    flush [host]
 
default params values:
    host localhost
    max_try 1
    wait_seconds 1
    delay_seconds 0
```

## Deployment

Deploy Vinyl container to your own server via [![Wodby](https://www.google.com/s2/favicons?domain=wodby.com) Wodby](https://wodby.com/services/vinyl).

[geoip]: https://github.com/varnish/libvmod-geoip
[geoip2]: https://github.com/varnishcache-friends/libvmod-geoip2
[digest]: https://github.com/varnish/libvmod-digest
[cookie]: https://github.com/varnish/varnish-modules/blob/master/docs/vmod_cookie.rst
[vsthrottle]: https://github.com/varnish/varnish-modules/blob/master/docs/vmod_cookie.rst
[header]: https://github.com/varnish/varnish-modules/blob/master/docs/vmod_header.rst
[saintmode]: https://github.com/varnish/varnish-modules/blob/master/docs/vmod_saintmode.rst
[softpurge]: https://github.com/varnish/varnish-modules/blob/master/docs/vmod_softpurge.rst
[tcp]: https://github.com/varnish/varnish-modules/blob/master/docs/vmod_tcp.rst
[var]: https://github.com/varnish/varnish-modules/blob/master/docs/vmod_var.rst
[xkey]: https://github.com/varnish/varnish-modules/blob/master/docs/vmod_xkey.rst

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