压缩流量

如果本地缓存的历史走势信息的最新日期是5月5日，服务器的历史走势信息的最新日期是5月7日，那么服务器就像发送5月6日和5月7日这两天的走势信息，这个数据很小，不需要压缩（我使用的压缩算法，对于数据量过小的数据压缩并不理想，数据量过...

谷歌Chrome浏览器很快就会提升网页加载速度并且降低数据流量消耗，这要归功于公司引进的Brotli压缩算法。Brotli压缩算法始于去年九月。谷歌声称和使用已经达到3年时间的Zopfli算法相比，它可以将数据压缩率继续提升26%，谷歌表示，Brotli还...

钉钉3.0，依旧没解决拍照压缩上传，图片过大造成流量过大的问题！

钉钉3.0，依旧没解决拍照压缩上传，图片过大造成流量过大的问题！照片上传图片压缩后，图片过大，对使用者的流量消耗很厉害，钉钉推行的移动办公室，对于用户的流量问题应该优先考虑，如果用户使用钉钉因流量问题，造成用户不愿继续使用该...

Xtrabackup流备份,增量和压缩小结

3、xtrabackup的xbstream流备份，直接备份后，通过管道直接压缩，这样把原约3次的IO，减少为一次，整个使用时间也变短了。【适合使用场景】1、数据库文件比较大，要压缩的库；导致整个备份时间长，且要求从库延迟不能太大的库。【线上使用...

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