Mercurial > hg > nginx-tests
annotate proxy_cache_revalidate.t @ 1999:15f538440a77 default tip
Tests: adjusted proxy_cache_use_stale.t cache validity.
At least the "s-w-r - updating stale" test sometimes fails on slow
hosts due to "stale-while-revalidate=4" being not enough, so the request
returns with the EXPIRED cache status instead of STALE.
Fix is to use larger "stale-while-revalidate=" times where it is not
significant.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Fri, 09 Aug 2024 18:37:25 +0300 |
parents | fc3722dd8862 |
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1 #!/usr/bin/perl |
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2 |
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3 # (C) Maxim Dounin |
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4 |
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5 # Tests for http proxy cache revalidation with conditional requests. |
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6 |
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7 ############################################################################### |
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8 |
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9 use warnings; |
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10 use strict; |
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11 |
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12 use Test::More; |
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13 |
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14 BEGIN { use FindBin; chdir($FindBin::Bin); } |
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15 |
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16 use lib 'lib'; |
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17 use Test::Nginx; |
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18 |
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19 ############################################################################### |
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20 |
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21 select STDERR; $| = 1; |
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22 select STDOUT; $| = 1; |
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23 |
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24 my $t = Test::Nginx->new()->has(qw/http proxy cache rewrite/)->plan(23) |
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25 ->write_file_expand('nginx.conf', <<'EOF'); |
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26 |
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27 %%TEST_GLOBALS%% |
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28 |
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29 daemon off; |
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30 |
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31 events { |
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32 } |
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33 |
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34 http { |
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35 %%TEST_GLOBALS_HTTP%% |
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36 |
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37 proxy_cache_path %%TESTDIR%%/cache levels=1:2 |
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38 keys_zone=one:1m; |
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39 |
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40 proxy_cache_revalidate on; |
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41 |
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42 server { |
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43 listen 127.0.0.1:8080; |
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44 server_name localhost; |
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45 |
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46 location / { |
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47 proxy_pass http://127.0.0.1:8081; |
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48 proxy_cache one; |
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49 |
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50 proxy_cache_valid 200 404 2s; |
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51 |
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52 add_header X-Cache-Status $upstream_cache_status; |
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53 } |
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54 } |
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55 |
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56 server { |
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57 listen 127.0.0.1:8081; |
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58 server_name localhost; |
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59 |
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60 location / { } |
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61 location /etag/ { |
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62 proxy_pass http://127.0.0.1:8081/; |
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63 proxy_hide_header Last-Modified; |
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64 } |
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65 location /201 { |
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66 add_header Last-Modified "Mon, 02 Mar 2015 17:20:58 GMT"; |
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67 add_header Cache-Control "max-age=1"; |
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68 add_header X-If-Modified-Since $http_if_modified_since; |
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69 return 201; |
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70 } |
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71 } |
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72 } |
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73 |
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74 EOF |
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75 |
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76 my $d = $t->testdir(); |
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77 |
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78 $t->write_file('t', 'SEE-THIS'); |
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79 $t->write_file('t2', 'SEE-THIS'); |
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80 $t->write_file('t3', 'SEE-THIS'); |
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81 |
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82 $t->run(); |
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83 |
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84 ############################################################################### |
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85 |
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86 # request documents and make sure they are cached |
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87 |
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88 like(http_get('/t'), qr/X-Cache-Status: MISS.*SEE/ms, 'request'); |
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89 like(http_get('/t'), qr/X-Cache-Status: HIT.*SEE/ms, 'request cached'); |
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90 |
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91 like(http_get('/t2'), qr/X-Cache-Status: MISS.*SEE/ms, '2nd request'); |
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92 like(http_get('/t2'), qr/X-Cache-Status: HIT.*SEE/ms, '2nd request cached'); |
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93 |
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94 like(http_get('/etag/t'), qr/X-Cache-Status: MISS.*SEE/ms, 'etag'); |
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95 like(http_get('/etag/t'), qr/X-Cache-Status: HIT.*SEE/ms, 'etag cached'); |
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96 |
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97 like(http_get('/etag/t2'), qr/X-Cache-Status: MISS.*SEE/ms, 'etag2'); |
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98 like(http_get('/etag/t2'), qr/X-Cache-Status: HIT.*SEE/ms, 'etag2 cached'); |
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99 |
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100 like(http_get('/201'), qr/X-Cache-Status: MISS/, 'other status'); |
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101 like(http_get('/201'), qr/X-Cache-Status: HIT/, 'other status cached'); |
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102 |
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103 like(http_get('/t3'), qr/SEE/, 'cache before 404'); |
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104 |
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105 # wait for a while for cached responses to expire |
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106 |
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107 select undef, undef, undef, 3.5; |
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108 |
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109 # 1st document isn't modified, and should be revalidated on first request |
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110 # (a 304 status code will appear in backend's logs), then cached again |
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111 |
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112 like(http_get('/t'), qr/X-Cache-Status: REVALIDATED.*SEE/ms, 'revalidated'); |
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113 like(http_get('/t'), qr/X-Cache-Status: HIT.*SEE/ms, 'cached again'); |
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114 |
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115 rename("$d/t3", "$d/t3_moved"); |
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116 |
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117 like(http_get('/t3'), qr/ 404 /, 'cache 404 response'); |
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118 |
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119 select undef, undef, undef, 0.1; |
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120 like($t->read_file('access.log'), qr/ 304 /, 'not modified'); |
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121 |
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122 # 2nd document is recreated with a new content |
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123 |
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124 $t->write_file('t2', 'NEW'); |
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125 like(http_get('/t2'), qr/X-Cache-Status: EXPIRED.*NEW/ms, 'revalidate failed'); |
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126 like(http_get('/t2'), qr/X-Cache-Status: HIT.*NEW/ms, 'new response cached'); |
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127 |
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128 # the same for etag: |
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129 # 1st document isn't modified |
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130 # 2nd document is recreated |
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131 |
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132 like(http_get('/etag/t'), qr/X-Cache-Status: REVALIDATED.*SEE/ms, |
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133 'etag revalidated'); |
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134 like(http_get('/etag/t'), qr/X-Cache-Status: HIT.*SEE/ms, |
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135 'etag cached again'); |
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136 like(http_get('/etag/t2'), qr/X-Cache-Status: EXPIRED.*NEW/ms, |
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137 'etag2 revalidate failed'); |
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138 like(http_get('/etag/t2'), qr/X-Cache-Status: HIT.*NEW/ms, |
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139 'etag2 new response cached'); |
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140 |
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141 # check that conditional requests are only used for 200/206 responses |
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142 |
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143 # d0ce06cb9be1 in 1.7.3 changed to ignore header filter's work to strip |
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144 # the Last-Modified header when storing non-200/206 in cache; |
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145 # 1573fc7875fa in 1.7.9 effectively turned it back. |
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146 |
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147 unlike(http_get('/201'), qr/X-If-Modified/, 'other status no revalidation'); |
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148 |
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149 # wait for a while for a cached 404 response to expire |
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150 |
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151 select undef, undef, undef, 3.5; |
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152 |
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153 # check that conditional requests are not used to revalidate 404 response |
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154 |
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155 # before fd283aa92e04 introduced in 1.7.7, this test passed by chance because |
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156 # of the If-Modified-Since header that was sent with Epoch in revalidation |
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157 # of responses cached without the Last-Modified header; |
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158 # fd283aa92e04 leaved (an legitimate) successful revalidation of 404 by ETag |
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159 # (introduced by 44b9ab7752e3 in 1.7.3), which caused the test to fail; |
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160 # 1573fc7875fa in 1.7.9 changed to not revalidate non-200/206 responses but |
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161 # leaked Last-Modified and ETag into 404 inherited from stale 200/206 response; |
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162 # 174512857ccf in 1.7.11 fixed the leak and allowed the test to pass. |
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163 |
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164 rename("$d/t3_moved", "$d/t3"); |
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165 |
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166 like(http_get('/t3'), qr/SEE/, 'no 404 revalidation after stale 200'); |
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167 |
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168 ############################################################################### |