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So many companies, so many customs
In the beginning we all get the feeling that System Design is a huge subject to comprehend, which pretty much is true. The secret for this type of intreviews is to understand as much as possible what are the expectations of your recruiter and what will be the structure of the interview.
Being such a vast subject, there are a lot of approaches for this type of interviews. As a matter of fact, I already had 3 of them and each one was different from the rest. By far. And none of them matched with that the online sources were covering. This is why is important to understand their expectations.
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Step 6 — Tradeoffs
At the end of the day, there is no perfect solution. And this is available for any system, no matter how big the company is. Each solution has their advantages and disadvantages. The important part is to be aware of them and each decision you make should be made taking into account the tradeoffs....
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Step 3 — Design for the Right Scale
Make sure that you know the data throughput and the number of users. This way you can create a software solution capable, scalable, without over-optimisations. Some questions to keep in mind during interview:
- What is the expected read-to-write ratio?
- How many concurrent request...
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Step 1 - Understand the goals
Clarify any ambiguity you have at the start of the interview. All your assumptions, speak them out loud and discuss them with your recruiter. Make sure you are on the same page, by asking:
- What is the goal of the system?
- Who are the users of the system? What do they need it fo...
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Step 2 - Establish the scope
Think and discuss what are the main features that you will cover. As you can imagine, describing the whole infrastructure in detail is impossible in 45 minutes. Some questions you might ask are:
- Do we want to discuss the end-to-end experience or just the API?
- What clients do we...
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Step 4 — Start High-Level, then Drill-Down
Once you have all the information collected from the previous steps, you can start actually designing the system. The best approach for this is to start by sketching all the parts that the solution is made out of. Once you have that done, you can take each part and provide more details, but make ...
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Examples of decisions that imply tradeoffs
- What type of database would you use and why?
- What caching solutions are out there? Which would you choose and why?
- What frameworks can we use as infrastructure in your ecosystem of choice?
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Step 5 — Data Structures and Algorithms (DS&A)
While interviewing, some companies will be oriented more on the architecture part, while others focus more on the DS&A optimisations. Coming back to Step 1, it's important to understand what are the expectations of your interviewer and try to deliver based on them.
Keeping that in mind, tr...
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Show this strengths
Prior to presenting the steps you should follow once the interview begins, there are some qualilties that will help you leave a better impresion to the interviewer:
- Honesty
- Confidence
- Willingness to learn
T...
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CURATED FROM
IDEAS CURATED BY
Some insights regarding the Design System Interviews. This article covers how to approach an interview of this type.
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