压测中使用openresty作为upstream来业务耗时
最近在压测Apisix，需要按照一定的概率分布模拟请求耗时，以便达到模拟真实业务请求来压测的目的。
第一版后端程序使用Go语言，性能不达标，没法压到Apisix的极限；
第二版使用Nginx作为后端程序，性能达标，压测4C8G的Apisix，极限TPS约1.4W；
第三版使用openresty配合lua来模拟耗时，性能达标，4C8G的实例TPS约1.2W。
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
| # conf.d/default.conf
server {
listen 80;
server_name _;
#charset koi8-r;
#access_log /var/log/nginx/host.access.log main;
access_log off;
location /test {
content_by_lua_block {
ngx.say("hello world");
}
}
location /sleep {
content_by_lua_block {
local resty_random = require "resty.random"
local function random_wait_time(min_wait_time, max_wait_time)
local random_bytes = resty_random.bytes(4, true)
local random_float = 1 + (0xffffffff % tonumber(0xffffffff)) * 2^-32
local wait_time = min_wait_time + random_bytes:byte(1) / 0xff * (max_wait_time - min_wait_time)
return wait_time
end
local wait_time_seed = random_wait_time(0, 10000)
local wait_time = 0
if wait_time_seed > 9990 then
wait_time = random_wait_time(2, 5)
elseif wait_time_seed > 9900 then
wait_time = random_wait_time(1, 2)
elseif wait_time_seed > 9000 then
wait_time = random_wait_time(0.5, 1)
elseif wait_time_seed > 8000 then
wait_time = random_wait_time(0.05, 0.5)
else
wait_time = random_wait_time(0, 0.05)
end
ngx.sleep(wait_time)
ngx.header["Content-type"] = 'text/plain'
ngx.say("Hello, OpenResty! I waited for " .. wait_time .. " seconds. Seed is " .. wait_time_seed .. ".\n")
}
}
location / {
root /usr/local/openresty/nginx/html;
index index.html index.htm;
}
#error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/local/openresty/nginx/html;
}
# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
# proxy_pass http://127.0.0.1;
#}
# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \.php$ {
# root /usr/local/openresty/nginx/html;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
# include fastcgi_params;
#}
# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
}
|