Project highlights and project difficulties is the interview asked about the project, the two most commonly asked questions, because the previous article has been analyzed the project difficulties of the problem, so let's look at how to answer the project highlights of the problem today.
PS: The project highlights question is a classic interview question that can deeply examine the applicant's understanding of the project and technical depth mastery. Today, let's delve into how to answer this key question in order to show your technical strength.
1. Answer ideas
When interviewers ask this question, they are not just looking for a superficial description of the project, but they expect you to clearly articulate the unique aspects of the project, the innovative solutions, and the significant results achieved. This requires us to answer not only in a structured way, but also in an organized manner.Be focused and show your technical prowess and work performance。
2. Answering skills
In reply to.The STAR rule can be applied：
- Situation: Briefly describe the background and objectives of the project.
- Task: Define your responsibilities and tasks in the program.
- Action: Describe in detail the specific actions and technical means used to achieve the objective.
- Result: Focus on the results achieved and the value brought by the project.
For example, I was involved in a development project for a large e-commerce platform (Situation). My task was responsible for optimizing the order processing module to improve the stability and performance of the system (Task). I used multi-threaded concurrent processing and caching technology to reconstruct the order processing process (Action). In the end, the average response time of order processing was shortened from 5 seconds to 1 second, and the concurrent processing capacity of the system was increased by 3 times, which greatly improved the shopping experience of users and brought significant business growth for the company (Result).
3. Classification of project highlights
Project highlights can be divided into the following categories:
3.1 Technical highlights
Technical highlights can be described as follows:
- distributed architecture: A new distributed architecture (e.g., Spring Cloud Alibaba) was adopted in the project to improve the concurrent processing capability of the system, bringing the system, which could only handle a few hundred requests per second, up to thousands of requests per second.
- Concurrent Programming/Threading: Use concurrent programming techniques to ensure that projects are executed efficiently, and use threading orchestration to ensure that tasks are executed properly.
- separate database and tables: The project uses thelibrary and table technology(Sharding Sphere) to increase the concurrent processing performance of the database.
- Multiple Design Patterns: Complete project development using a variety of design patterns, such as.chain-of-responsibility design patternEnsure the safety and use of the projectfactory modelto improve the efficiency of program execution, the use ofbuilder patternImplementations create and assign objects, useproducer-consumer modelEnabling asynchronous communication and module decoupling,observer modelRealize real-time reading and use of dataagency modelRealization of unified processing and use of common functionssingleton modelEnsuring efficiency of implementation, utilizationlazybones modeAchievement of full utilization of resources, etc.
- Resolve cache and database consistency issues：Solving MySQL and Redis Data Consistency Problems by Monitoring MySQL Binlogs with Canal。
- distributed lock: Usedistributed lockEnsure the security and stability of large model interface calls, where distributed locks are implemented for lock re-entry, lock (auto) renewal, lock mis-deletion, and single-point distributed lock failure.
More technical highlights can be found in the AI Cloud program highlights (11):/learn/
3.2 Performance
Common cases of job performance:
- Developed an e-commerce platform that successfully helped the company increase sales by 50% in a given time period, and improved user purchase conversion rates by optimizing the user experience and recommendation algorithms.
- The risk assessment system constructed for financial institutions effectively reduces the rate of non-performing loans and saves the company a lot of money.
People can extend more work performance based on the above ideas and their own projects.
3.3 Problem solving and overcoming challenges
Examples of common problems and challenges overcome are listed below:
- A memory leak was encountered, and through in-depth code analysis and performance monitoring tools, the problem was eventually located and resolved to ensure stable system operation.
- Before the project went live, it encountered an unexpected security vulnerability and quickly organized the team to conduct emergency response and repair the vulnerability in time to avoid data leakage and business loss.
3.4 Team management and collaboration
Common team management and collaboration examples:
- Acting as the technical lead in the project, he successfully coordinated the cooperation between multiple teams, solved the problem of cross-departmental miscommunication, and ensured the project was delivered on time.
- Introduced an agile development process, which improved the team's development efficiency and shortened the project's iteration cycle from two months to one month.
Post-lesson Reflections
In addition to the above program highlights, what other program highlights do you know? Feel free to add them in the comments section~
This article has been included in my interview mini-site, which contains modules such as Redis, JVM, Concurrency, Concurrency, MySQL, Spring, Spring MVC, Spring Boot, Spring Cloud, MyBatis, Design Patterns, Message Queuing and more.