Nginx first time

 1  ## Nginx

 2

 3 - Reverse proxy

 4 > Reverse proxy mode means that the server receives internet link requests and then Converted to the internal web server according to the request

 5 - Load balancing

 6 1. Each request is allocated to the back-end server one by one in chronological order,

 7  ``` Simple configuration

 8  upstream test {

 9 server localhost:8080;

10 server localhost:8081;

11

12 }

13

14  server {

15 listen 80;

16  server_name:localhost;

17

18 location / {

19 proxy_pass http://test;

20

21 }

22 }

23

24  ```

25

26 2 . Weight; specify the polling probability, weight is positively proportional to the access ratio, used for the unbalanced situation of the back-end server Xinneng

27

28  ```

29  upstream test {

30 server localhost:8080 weight=9;

31 server localhost:8081 weight=1;

32

33 }

34 //10 visits, 1 time 8081, 9 times 8080

35  ```

36

37 3 . When the ip_hash program request is not stateless (using session to save data), we need a client to access a server, and each request of ip_hash is allocated according to the hash result of the access ip so that each visitor fixes a back-end server

38

39  ```

40  upstream test {

41  ip_hash;

42 server localhost:8080 weight=9;

43 server localhost:8081 weight=1;

44

45 }

46  ```

47

48 4 . fair (third-party) According to the back-end response time to allocate the request response time short priority allocation

49 5. url_hash (third party) Assign requests according to the hash result of the visited url so that each url is directed to the same back-end server. Add a hash statement in the upstream server statement. Other parameters such as weight cannot be written in the server statement. hash_method uses hash Algorithm

50

51  ```

52  upstream test {

53  hash: $request_uri;

54  hash_method crc32;

55 server localhost:8080;

56 server localhost:8081;

57

58 }

59  ```

60

61 - HTPP server (dynamic and static separation)

62  Nginx itself is also a resource server, only for static resources You can use Nginx to act as a proxy while achieving dynamic and static separation

63

64  ```

65  server {

66 listen 80;

67  server_name:localhost;

68

69 location / {

70  root e:\html;

71  index index.html;

72 }

73 }

74  ```

75 > The index under the html directory of E disk will be accessed by default. html page

76

77

78  ```

79  server {

80 listen 80;

81  server_name:localhost;

82

83 location / {

84  root e:\html;

85  index index.html;

86 }

87

88 localhost ~ \.(gif|jpg|jpge)$ {

89 root e:\static;

90 }

91 }

92  ```

93 > All static files are processed by nginx, and the storage directory is html

94

95-Forward proxy