Rani Dhage

Tired of Array Loops?

Ever get stuck writing repetitive loops to manipulate arrays?
JavaScript offers a secret weapon: a suite of powerful array methods like map, filter, and more!

These methods take the grunt work out of array manipulation, making your code cleaner, more concise, and way more fun to write.
Let's explore a few gems:

️𝐌𝐚𝐩 𝐌𝐞𝐭𝐡𝐨𝐝: Transform each element in an array like a master chef ‍ (pass in a function to modify them).

𝐅𝐢𝐥𝐭𝐞𝐫 𝐌𝐞𝐭𝐡𝐨𝐝: Clean up your array like a pro (create a new array with elements that meet your criteria).

𝐅𝐢𝐧𝐝 𝐌𝐞𝐭𝐡𝐨𝐝: Become a detective ️‍(find the first element that matches your condition).

𝐅𝐢𝐧𝐝𝐈𝐧𝐝𝐞𝐱 𝐌𝐞𝐭𝐡𝐨𝐝: Level up your detective skills (find the index of the first matching element).

𝐅𝐢𝐥𝐥 𝐌𝐞𝐭𝐡𝐨𝐝: Paint your array with a new value like an artist (fill the entire array or a specific range).

𝐒𝐨𝐦𝐞 𝐌𝐞𝐭𝐡𝐨𝐝: Channel your inner Sherlock (check if at least one element meets a condition).

𝐄𝐯𝐞𝐫𝐲 𝐌𝐞𝐭𝐡𝐨𝐝: Play code detective like Columbo (check if ALL elements meet a condition).

Keep sharing , keep learning !

#javascript #coding #arraymethods

Commonly asked System Design CONCEPT BASED interview topics -

1. Horizontal vs Vertical Partitioning: https://bit.ly/3zyBRew
Vertical partitioning splits tables by columns, often separating different features. Horizontal partitioning splits tables by rows, distributing data across multiple servers. Vertical organizes data logically, while horizontal improves scalability + performance.

2. Apache Kafka: https://kafka.apache.org/
Kafka is a distributed streaming platform using a publish-subscribe model. It's fast due to sequential disk I/O, zero-copy principle, and efficient batching of messages.

3. Rate Limiter: https://lnkd.in/dvvNjKue
A rate limiter controls the rate of requests a client can make to a service. It prevents overload and ensures fair resource usage.

4. JWT vs OAuth vs SAML: https://lnkd.in/dPqrcN3u
JWT is a compact, self-contained token for secure information transmission. OAuth is an authorization framework for delegated access. SAML is an XML-based standard for exchanging authentication and authorization data.

5. Single Sign-On (SSO): https://lnkd.in/diU54_-s
SSO allows users to access multiple applications with one set of credentials. It typically uses a central authentication server and protocols like SAML/OAuth.

6. Microservices vs Monolithic Architecture: https://bit.ly/4bAt2hv
Microservices architecture breaks an application into small, independent services. Monolithic architecture is a single, tightly-coupled unit. Microservices offer scalability while monoliths are simpler to develop + deploy.

7. Reverse Proxy vs Forward Proxy: https://bit.ly/3xOx6wO
A reverse proxy sits in front of web servers, forwarding client requests to backend servers. A forward proxy sits in front of clients, forwarding their requests to the internet. Reverse proxies are used for load balancing and security, while forward proxies are used for anonymity and filtering.

8. CAP Theorem: https://lnkd.in/dQhhe4jD
The CAP theorem states that a distributed system can only provide two of three guarantees: Consistency, Availability, and Partition tolerance. In practice, partition tolerance is necessary, so systems must choose between consistency and availability during network partitions.

9. Global Scale System Design:https://bit.ly/3RW8DMJ
Key considerations include data replication, CDN usage, distributed caching, efficient load balancing, and handling data consistency across regions. Latency management, regulatory compliance, and disaster recovery are also crucial for global systems.

10. Efficient Caching Strategy: https://lnkd.in/dfnP9keJ
Implement multi-level caching (browser, CDN, application server, database). Use appropriate cache invalidation strategies (TTL, event-based). Consider cache coherence for distributed systems.

Huge thanks to Gaurav Sen for stellar system design content! 🙌 Dive into their amazing insights!

#systemdesign #interviewtips #jobs