The term scalability refers to the capability of a website to handle volumes and types of activities that take place after the start of the app. Organizations need to make sure that the system is really ready for release, which characteristics remain acceptable in many situations and under various conditions, and which can support the transactional levels after the launch of the website. Below are the types of scenarios influence the scalability:
- How closely the test environment resembles the production environment;
- Millions of users can gain access to the website at the time of launch;
- Activity peaks related to marketing stimulation.
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To verify the system scalability, you must solve the following key tasks:
- Determine what type of scenario is expected;
- Establish business cycles;
- Map out the performance, simulating the users that are expected to gain access to the website;
- Set the levels and types of activities that can degrade the performance;
- Pick up the right metric to measure the characteristics (e.g., queries per second and transactions per second).
Another aspect of scalability testing is to determine all possible types of visitors to the site and expected interaction with them. Random people are curious and will be inspected while staying on the website. Other users seek to do business, requesting information or banking transactions, or buying products from a retailer. These tests reflect different user actions, namely:
- Simple navigation on the website;
- Basic operations with the website;
- Insightful operations performed with the key functions.
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The next step is to estimate the number of each type of visitors at various times:
- The number of users, represented as any unique number of visits per day, per week or per month;
- The current total number of users: the worst case scenario during peak hours;
- Maximum query speed: the number of web pages served per second.
You need to establish what tools (e.g., testing and monitoring tools) will be used to conduct load testing.
Be sure to generate a sufficient number of users and transactions to estimate the capabilities and features that will be supported in real-world environments. Website testing services deal with websites to check their load speed and make them faster, if necessary.
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