varnish

varnishcache/varnish-cache
参考
管理
- cli, telnet, web
- child process mgmt
- initializtion
- vlc compiler -> c -> shared object -> child/cache
child/cache
- storage/hashing
- log/stats
- accep
- backend comm
- worker threads
- object expiry
CLI
- varnishd - 主程序
- varnishadm
- varnishtest
- varnish_reload_vcl
- log
  - varnishlog
  - varnishstat
  - varnishhist
  - varnishtop
  - varnishncsa

# macOS
brew install varnish

varnishd -V # 查看版本
varnishd -x cli

uuidgen > varnish-secret
# github pages
# -f default.vcl
varnishd -a 127.0.0.1:8080 -b 185.199.109.153:80 -T 127.0.0.1:6082 -d -S $PWD/varnish-secret -s file,/tmp/varnish-storage,1G
varnishadm -S $PWD/varnish-secret -T 127.0.0.1:6082 start

curl -H 'Host: wener.me' 127.0.0.1:8080
curl -H 'Host: charts.wener.tech' 127.0.0.1:8080/index.yaml -sv > /dev/null

varnishadm -S $PWD/varnish-secret -T 127.0.0.1:6082 status -j

# docker
# VARNISH_SIZE
# VARNISH_HTTP_PORT=80
# VARNISH_PROXY_PORT=8443
# feature=+http2
docker run --rm -it \
  -p 8080:80 \
  -v $PWD/default.vcl:/etc/varnish/default.vcl:ro \
  --tmpfs /var/lib/varnish/varnishd:exec \
  --name varnish varnish:alpine

auth <response>
help
vcl
- vcl.load <configname> <filename> [auto|cold|warm]
- vcl.list
- vcl.use <configname|label>
- vcl.show [-v] [<configname>]
- vcl.deps
- vcl.discard <name_pattern>...
- vcl.inline <configname> <quoted_VCLstring> [auto|cold|warm]
- vcl.label <label> <configname>
- vcl.state <configname> [auto|cold|warm]
- vcl.symtab
backend
- backend.list
- backend.set_health
ban <field> <operator> <arg> [&& <field> <oper> <arg> ...]
- ban.list
banner
panic.clear
panic.show
param.reset <param>
param.set [-j] <param> <value>
param.show [-l|-j] [<param>|changed]
pid [-j]
ping [-j] [<timestamp>]
quit
start, stop
status [-j]
storage.list

varnishd	for
-a	listen address
-b none	无后端
`-b [addr[:port]\|path]`	backend - 默认 :80
`-f <vclfile>`	VCL program
`-n <dir>`	Working directory
-F	foreground
`-T address[:port]`	CLI address
-M address:port	reverse cli
-i identity
-I clifile	Initialization cli
-E extension	加载扩展
`-x <topic>`	文档 - parameter,vsl,cli,builtin,optstring
Tuning
-t TTL
-p param=value
`-s [name=]kind[,options]`	存储选项
`-l <vsl>`	Size of shared memory log
Security
`-r param[,param...]`	parameters read-only from CLI
`-S <secret-file>`
`-j jail[,options]`	unix, none
Advanced/Dev/Debug
-d	debug mode
-C	Output VCL code compiled to C language
-V	version
`-h kind[,options]`	Hash specification
-W waiter	Waiter implementation

storage
- malloc
- umem - libumem
- file - file,path[,size[,granularity[,advice]]]
  - 重启缓存失效
  - 长期运行会碎片化
  - mmap 作为 memory, 而非单个文件独立, 会预先 alloc 给定的 size
  - 单文件要能存入虚拟内存 - ulimit -v
  - granularity 默认为 page size - 一般 4k
  - advice=random - normal, random, sequential
- mse - 企业版

配置

/etc/varnish/varnish.params
/etc/varnish/default.vcl
- macOS brew /usr/local/etc/varnish/default.vcl

FAQ

x-proxy-cache: MISS
X-Varnish

多个 Storage

varnishd -s disk=file,/var/lib/varnish/storage,250G -s memory=malloc,32G

sub backend_response {
    if(beresp.http.Content-Type ~ "^(image|video)/") {
        set beresp.storage = "file";
    } else {
        set beresp.storage = "memory";
    }
}

varnish

配置​

FAQ​

多个 Storage​

配置

FAQ

多个 Storage