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倒数第二次恋爱

网站性能优化：页面加载速度从5秒降到1秒的方法_我的网站

超凡蜘蛛侠

A | Shares of Pfizer are in retreat on the first day of trading after the drug company said sales of its COVID-19 vaccine and its coronavirus treatment are weaker than it had expected and cut revenue projections by $9 billion for the year. Falling sales of both clipped sales in the second quarter, but Pfizer said in August that it expected a rebound in the second half of 2023. Shares of Pfizer slipped more than 1% before the opening bell Monday and Moderna, which is heavily reliant on the competing vaccine it makes, slid nearly 5%. Pfizer said Friday that global usage of Paxlovid is trending slightly above last year, but that it's still below expectations.The fall vaccination period just began and the New York City drugmaker said that it's too soon to get a handle on vaccination rates for the year.Full-year revenue for Paxlovid and Comirnaty is expected to be approximately $12.5 billion, short $9 billion of what it had expected. Pfizer is lowering its full-year revenue expectations for Paxlovid by approximately $7 billion. That number also accounts for delayed commercialization of the product, which was pushed to January 2024 from the company's previous expectation of commercialization in the second half of this year. Pfizer is also lowering its 2023 revenue expectations for Comirnaty by approximately $2 billion due to lower-than-expected vaccination rates.Pfizer Inc. now foresees 2023 revenue in a range of $58 billion to $61 billion, down from its prior forecast for $67 billion to $70 billion. It now projects full-year adjusted earnings between $1.45 and $1.65 per share due to lower-than-anticipated revenue for COVID-19-related products and inventory write-offs.That is short of the full-year revenue of $63.61 billion and earnings of $2.77 per share that Wall Street was expecting, and far short of the company's previous projections of per-share earning between $3.25 and $3.45. JPMorgan said the company's update solves an ongoing U.S. Paxlovid inventory debate and it anticipates the company's bigger-than-expected cuts to its sales projections will help put a floor under per-share earnings expectations for next year.。

B |

　一键部署OpenClaw 页面打开超过3秒，一半用户会关页。速度优化不是玄学，就是压缩、缓存、延迟加载三板斧。第一板斧，开Gzip压缩。HTML、CSS、JS这些文本文件压缩后体积能减小60%到80%。 # Nginx开启Gzip压缩（nginx.conf） gzip on; gzip_min_length 1k; gzip_comp_level 6; gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript image/svg+xml; # 静态资源设置缓存（浏览器缓存） location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff2)$ { expires 30d; add_header Cache-Control "public, no-transform"; } 第二板斧，图片延迟加载。

C | 页面上的图片不用一次性全部加载，滑到哪里再加载哪里。这对长页面特别有效。第三板斧，PHP OPcache。如果用的是PHP程序（WordPress、织梦等），开OPcache能缓存编译后的字节码，减少PHP重复编译的开销。 # PHP OPcache配置（php.ini） opcache.enable=1 opcache.memory_consumption=128 opcache.interned_strings_buffer=8 opcache.max_accelerated_files=4000 opcache.revalidate_freq=60 opcache.fast_shutdown=1 另外，大图片用WebP格式代替JPG，体积能小30%到50%。服务器开HTTP/2，多路复用连接，加载多个文件更快。