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How to fix a slow Magento 2 site?
TTFB optimization is the only right way to fix a slow Magento 2 site. Caching, faster hardware, etc. will just hide the problem. When profiling server response time you actually identify the cause of poor performance. If you happen to run Magento 1 I wrote a tutorial on how to optimize TTFB for M1.
Which is an example of Magento TTFB optimization?
An approximate list of default magento extensions you might not need: Also you might have the custom extension installed in the past that you dont use anymore but it still has frontend observer that is executed on every page request slowing your website down. Php code in theme files could be optimized as well. I will give you an example:
Is there way to reduce time to first byte in Magento?
If you are running old magento version try to perform magento upgrade. Newest releases consists of many core files rewrites that optimize the way magento handles internal logic. Reducing time to first byte might be tedious and complex but the result would sure cheer you up. Your website pages would load faster even uncached.
How to check the run time of Magento?
It will show us the list of internal magento calls along with the corresponding run times. You can as well place profiler handles in your own code to measure its performance and identify bottlenecks. In magento backend go to System > Configuration > Advanced > Developer > Debug > Profiler set to Yes. In index.php file uncomment the following line:
Why do we need a Magento 2 TTFB audit?
Complex e-commerce platforms like Magento have millions of lines of code. It is easy to get lost in them. A TTFB audit helps you understand what code is actually run and how much time it takes to run it. Now what tools do we need to perform a Magento 2 TTFB audit?
What does the profiler do in Magento 2?
Magento 2 has a built-in profiler that helps analyze server response time. It outputs a trace with code blocks and time breakdowns. Let me explain the columns:
How to reduce TTFB time to first byte?
Time – time in seconds that takes to run code between Varien_Profiler::start and Varien_Profiler::stop calls with the handle specified in Code Profiler column Cnt – number of times the specified code block was executed during page load