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- Why am I getting (304) Not Modified error on some links when using . . .
59 Any ideas why on some links that I try to access using HttpWebRequest I am getting "The remote server returned an error: (304) Not Modified " in the code? The code I'm using is from Jeff's post here (the page seems to have disappeared, see an archive copy at the Wayback Machine)
- How does 304 Not Modified work exactly? - Stack Overflow
How are "304 Not Modified" responses generated? How does a browser determine whether the response to an HTTP request is 304? Is it set by the browser or sent from the server? If sent by the server,
- 不锈钢304和不锈钢316的区别是什么? - 知乎
304系列和316系列不锈钢都属于奥氏体不锈钢，具有 加工性能好、耐腐蚀、耐锈 的特点，两者相比，316比304的耐腐蚀性和耐热性更强一点，主要原因就是其化学成分上的一些区别。
- 不锈钢可以用磁铁辨别是不是304吗？ - 知乎
相反，质量次一点的200系列不锈钢，很有可能不带磁性，由此判定它是货真价实的不锈钢，就大错特错了。 特别要提出的是，因上述原因造成的304不锈钢的磁性，与其他材质的不锈钢磁性完全不是同一级别的，也就是说304钢的磁性始终显示的是弱磁性。
- html - Http 304 Cache-Control: no-cache - Stack Overflow
A response with Cache-Control: no-cache does not mean that the response must not be stored at the client at all, instead it means: If the no-cache directive does not specify a field-name, then a cache MUST NOT use the response to satisfy a subsequent request without successful revalidation with the origin server This allows an origin server to prevent caching even by caches that have been
- 304 Not Modified with 200 (from cache) - Stack Overflow
304 Modified A 304 Not Modified means that the files have not been modified since the specified version by the "If-Modified-Since", or "If-None-Match" 200 OK This is the response you'll get if an HTTP request works GET requests will have something relating to the files A POST request will have something holding the result of the action
- 不锈钢，为什么要叫304不锈钢呢？ - 知乎
304不锈钢是不锈钢的一种，是为国家认可的食品级不锈钢，所以大家知道的比较多。 304不锈钢具有良好的耐蚀性、耐热性，低温强度和机械特性;冲压、弯曲等热加工性好，无热处理硬化现象 (使用温度-196℃~800℃)。
- 304 不锈钢可耐多少度高温? - 知乎
304奥氏体不锈钢 耐高温极限： 连续使用温度：304不锈钢的 连续使用温度 （即在长期暴露下的最高耐受温度）为 870°C（1600°F）。在此温度下，材料仍能保持其强度和耐腐蚀性。 短期使用温度：在 短期暴露 （如几分钟到几小时）情况下，304不锈钢可耐受高达**925°C（1700°F）**的温度。 氧化极限：在
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