如何减少“第一个字节的时间”在我的网站上 [英] How to reduce the "Time for the first byte" on my website?
问题描述
网站：
鉴于这种情况，以下代码将给出TTFB（网络延迟+）2s：
<？php ob_start（）; ？>
<！doctype html>
< html>
< head>
< title>缓慢加载，缓慢完成< / title>
< / head>
< body>
<？php
sleep（2）; // Simulate slow processing
echoBody
？>
< / body>
< / html>
而这会给你一个TTFB（网络延迟+）0s：
<！doctype html>
< html>
< head>
< title>快速加载，缓慢完成< / title>
< / head>
< body>
<？php ob_start（）; ？>
<？php
sleep（2）; // Simulate slow processing
echoBody
？>
< / body>
< / html>
加载整个页面的时间在两种情况下都是一样的 - 只有延迟发生变化。如果你专注于减少TTFB（为什么），那应该给你足够的信息进一步调查。
重要：有很多前端变更，您应该专注于TTFB。
Website: Stasera in TV
if you go to the homepage, you'll see that before the page loads, the browser waits ...
How i could reduce Time for the first byte?
Nobody can give you a detailed answer without you showing the code responsible for generating the content of the site - because that's where the delay is.
However, since the site is using php, you are most likely using output buffering
Given that's the case, the following code will give a TTFB of (network latency +) 2s:
<?php ob_start(); ?>
<!doctype html>
<html>
<head>
<title>Slow to Load, Slow to finish</title>
</head>
<body>
<?php
sleep(2); // Simulate slow processing
echo "Body"
?>
</body>
</html>
Whereas this will give you a TTFB of (network latency +) 0s:
<!doctype html>
<html>
<head>
<title>Fast to load, Slow to finish</title>
</head>
<body>
<?php ob_start(); ?>
<?php
sleep(2); // Simulate slow processing
echo "Body"
?>
</body>
</html>
The time to load the whole page is the same in both cases - only where the delay is changes. If you are specifically focussed on reducing TTFB (why), that should give you enough information to investigate further.
IMPORTANT: There are a lot of frontend changes you should make before focussing on TTFB.
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