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comparison src/http/ngx_http_request.h @ 7006:9552758a786e

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Background subrequests for cache updates. Previously, cache background update might not work as expected, making client wait for it to complete before receiving the final part of a stale response. This could happen if the response could not be sent to the client socket in one filter chain call. Now background cache update is done in a background subrequest. This type of subrequest does not block any other subrequests or the main request.
author Roman Arutyunyan <arut@nginx.com>
date Thu, 25 May 2017 15:57:59 +0300
parents 8801ff7d58e1
children 1b068a4e82d8
comparison
equal deleted inserted replaced
7005:3e2d90073adf 7006:9552758a786e
62 62
63 /* unused 1 */ 63 /* unused 1 */
64 #define NGX_HTTP_SUBREQUEST_IN_MEMORY 2 64 #define NGX_HTTP_SUBREQUEST_IN_MEMORY 2
65 #define NGX_HTTP_SUBREQUEST_WAITED 4 65 #define NGX_HTTP_SUBREQUEST_WAITED 4
66 #define NGX_HTTP_SUBREQUEST_CLONE 8 66 #define NGX_HTTP_SUBREQUEST_CLONE 8
67 #define NGX_HTTP_SUBREQUEST_BACKGROUND 16
67 68
68 #define NGX_HTTP_LOG_UNSAFE 1 69 #define NGX_HTTP_LOG_UNSAFE 1
69 70
70 71
71 #define NGX_HTTP_CONTINUE 100 72 #define NGX_HTTP_CONTINUE 100
484 unsigned subrequest_in_memory:1; 485 unsigned subrequest_in_memory:1;
485 unsigned waited:1; 486 unsigned waited:1;
486 487
487 #if (NGX_HTTP_CACHE) 488 #if (NGX_HTTP_CACHE)
488 unsigned cached:1; 489 unsigned cached:1;
489 unsigned cache_updater:1;
490 #endif 490 #endif
491 491
492 #if (NGX_HTTP_GZIP) 492 #if (NGX_HTTP_GZIP)
493 unsigned gzip_tested:1; 493 unsigned gzip_tested:1;
494 unsigned gzip_ok:1; 494 unsigned gzip_ok:1;
541 unsigned disable_not_modified:1; 541 unsigned disable_not_modified:1;
542 unsigned stat_reading:1; 542 unsigned stat_reading:1;
543 unsigned stat_writing:1; 543 unsigned stat_writing:1;
544 unsigned stat_processing:1; 544 unsigned stat_processing:1;
545 545
546 unsigned background:1;
546 unsigned health_check:1; 547 unsigned health_check:1;
547 548
548 /* used to parse HTTP headers */ 549 /* used to parse HTTP headers */
549 550
550 ngx_uint_t state; 551 ngx_uint_t state;