| 1 | Caching in HTTP
|
| 2 | ===============
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| 3 |
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| 4 | ETAG
|
| 5 | ----
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| 6 |
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| 7 | Res 200:
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| 8 |
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| 9 | ETag: "fa6e-3e3073913b100"
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| 10 |
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| 11 | Req:
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| 12 |
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| 13 | If-None-Match: "fa6e-3e3073913b100"
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| 14 |
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| 15 | Res 304:
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| 16 |
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| 17 | ETag: "fa6e-3e3073913b100"
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| 18 |
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| 19 |
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| 20 | LAST MODIFIED
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| 21 | -------------
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| 22 |
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| 23 | Res 200:
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| 24 |
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| 25 | Last-Modified: Mon, 28 Jan 2013 22:29:45 GMT
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| 26 |
|
| 27 | Req:
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| 28 |
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| 29 | If-Modified-Since: Mon, 28 Jan 2013 22:29:45 GMT
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| 30 |
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| 31 | Res 304:
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| 32 |
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| 33 | Last-Modified:Mon, 28 Jan 2013 22:29:45 GMT
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| 34 |
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| 35 |
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| 36 | EXPIRES
|
| 37 | -------
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| 38 |
|
| 39 | Res 200:
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| 40 |
|
| 41 | Expires: Tue, 19 Mar 2013 11:17:57 GMT
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| 42 |
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| 43 | Do not try again before Tue, 19 Mar 2013 11:17:57 GMT
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| 44 |
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| 45 | CACHE-CONTROL
|
| 46 | -------------
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| 47 |
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| 48 | Res 200:
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| 49 |
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| 50 | Cache-Control: max-age=300
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| 51 |
|
| 52 | Do not try again until 5 minutes from now |
| \ | No newline at end of file |