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How do you identify and fix common performance bottlenecks on your website?

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Performance testing is a vital skill for web developers and testers, as it helps ensure that your website can handle high traffic, load fast, and deliver a smooth user experience. However, performance issues can arise from various sources, such as poorly optimized code, network latency, server configuration, or third-party services. How do you identify and fix common performance bottlenecks on your website? In this article, we will cover some basic steps and tools that can help you diagnose and resolve performance problems.

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MOUNIKA G.

Sr Performance Test Engineer - Load runner, JMeter, Neo Load, Appium, APl/Services, Dynatrace, New Relic, Splunk…
Harvinder Singh

???265 X Linkedin Top Voice ???|| Generative AI || Influencing others Voice || Business Transformation || Helping…
Monish Correia

QA Lead @ HDFC Life | Top Software Testing Voice | Postman Supernova & K6 Champion | Expert in Test Automation…

1 Analyze your website performance

The first step is to measure and analyze your website performance using tools such as Google PageSpeed Insights, Lighthouse, or WebPageTest. These tools can provide you with metrics such as load time, speed index, time to interactive, and largest contentful paint, as well as suggestions on how to improve them. You can also use these tools to compare your website performance across different devices, browsers, and locations, and identify any significant variations.

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MOUNIKA G.

Sr Performance Test Engineer - Load runner, JMeter, Neo Load, Appium, APl/Services, Dynatrace, New Relic, Splunk, DataDog, Akamai, Cloud performance, AWS, Azure, SQL, JIRA, Agile and more
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Identifying the key metrics that are most relevant to the website's performance goals. Common KPIs include page load time, time to first byte (TTFB), server response time, page size, and number of HTTP requests. Utilizing performance monitoring tools such as Dynatrace, Datadog, splunk Dashboards to analyze various aspects of your website's performance. These tools provide insights into page speed, optimization opportunities, and recommendations for improvement.

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2 Identify the root causes of performance issues

The next step is to drill down into the specific factors that are causing performance issues on your website. You can use tools such as Chrome DevTools, Firefox Developer Tools, or Safari Web Inspector to inspect the network activity, resource usage, and rendering performance of your website. You can also use tools such as YSlow, GTmetrix, or Pingdom to analyze the size, number, and order of your website assets, such as images, scripts, stylesheets, and fonts. By using these tools, you can identify the main sources of performance bottlenecks, such as slow server response, large or uncompressed files, blocking or redundant requests, or render-blocking resources.

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3 Optimize your website assets and code

The third step is to optimize your website assets and code in order to reduce the size, number, and impact of your requests, as well as improve the rendering performance. Common optimization techniques include minifying and compressing HTML, CSS, and JavaScript files; using image formats such as WebP, JPEG 2000, or AVIF; implementing lazy loading for images and other resources; using a content delivery network (CDN); applying caching strategies for assets and responses; and using asynchronous or deferred loading for scripts and stylesheets. All of these techniques can help prevent them from blocking the rendering of your website.

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Harvinder Singh

???265 X Linkedin Top Voice ???|| Generative AI || Influencing others Voice || Business Transformation || Helping Client's to Grow their Business ?? || DM For Promotion ?? ||
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1. Minify and compress files: Reduce HTML, CSS, and JavaScript file sizes to improve load times. 2. Optimize images: Use formats like WebP, JPEG 2000, or AVIF to reduce image sizes. 3. Lazy load resources: Defer loading of non-essential resources to improve initial page load. 4. Use a CDN: Distribute content across multiple servers to reduce latency. 5. Apply caching strategies: Store frequently accessed assets to reduce repeat requests.

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4 Test and monitor your website performance

The final step is to test and monitor your website performance regularly and under different scenarios, such as peak traffic, slow network, or device variations. You can use tools such as Apache JMeter, LoadRunner, or Gatling to simulate realistic user behavior and load on your website and measure its response time, throughput, and error rate. You can also use tools such as New Relic, Datadog, or Dynatrace to monitor your website performance and availability in real time and alert you of any issues or anomalies.

By following these steps and using these tools, you can identify and fix common performance bottlenecks on your website and improve its speed and performance.

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Monish Correia

QA Lead @ HDFC Life | Top Software Testing Voice | Postman Supernova & K6 Champion | Expert in Test Automation, Strategy & Performance | API Testing | Selenium | Locust | JavaScript
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In my experience working as a QA Lead, I came across a performance testing challenge where the API under test was expected to handle atleast 100 requests/sec load. But when I ran my performance script using K6 tool for the first time, Actual response we got was 30 requests/sec. After that we did fixes at our application end(code level changes) as well as Infra changes. And ran our scripts again, this time we were able to clock 130 requests/sec.

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5 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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How do you identify and fix common performance bottlenecks on your website?

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1 Analyze your website performance

2 Identify the root causes of performance issues

3 Optimize your website assets and code

4 Test and monitor your website performance

5 Here’s what else to consider

Performance Testing

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