Uses of reverse proxy server

Reverse proxies can hide the existence and characteristics of an origin server or servers.Application firewall features can protect against common web-based attacks, like a denial-of-service attack (DoS) or distributed denial-of-service attacks (DDoS). Without a reverse proxy, removing malware or initiating takedowns, for example, can become difficult.In the case of secure websites, a web server may not perform TLS encryption itself, but instead offloads the task … Continue reading Uses of reverse proxy server →

Interviews Experience

1) Technical round Explain me any one project / challenges / team sizeHow did you solve the problem of concurrency in your project.Which design patterns did you used ?Design LRU cacheWays to synchronized in memory cache with each otherWrite custom putIfAbsent by extending HashMap. Also handle concurrency/correctness 2) Technical round Best data structure for faster … Continue reading Interviews Experience →

System Design Engineering blog

Basic of Design https://github.com/kilimchoi/engineering-blogs https://github.com/donnemartin/system-design-primer https://github.com/binhnguyennus/awesome-scalability https://github.com/doocs/advanced-java http://blog.gainlo.co/index.php/category/system-design-interview-questions/ https://www.lecloud.net/tagged/scalability 2. Basic of Design Pattern https://refactoring.guru/design-patterns/catalog 3. NLP Based Design Twitter Newsfeed:https://bit.ly/37Vg8tN Twitter Ads:https://bit.ly/3bXnS1o Instagram Newsfeed:https://bit.ly/2ur0ZCJ Instagram Explore:https://bit.ly/37X53bv Facebook Deep Entity Classification:https://bit.ly/2upfbfl Uber Eats Recommendations:https://ubr.to/2ur1c8Zhttps://ubr.to/2HTMiv8https://ubr.to/2SSL0Xw Uber Maps:https://ubr.to/3a0dynv Airbnb:https://bit.ly/2VhDuafhttps://bit.ly/39Z63gxhttps://bit.ly/2SSgZqChttps://bit.ly/2v0UQxrhttps://bit.ly/2urR9Azhttps://bit.ly/38VWH5j Airbnb Experiences:https://bit.ly/2vbNjf9 Google:https://bit.ly/2SYi9Bb Netflix Recommendations:https://lnkd.in/dW3EU2p Spotify Recommendations:https://bit.ly/38RpWpM #machinelearning#systemdesign#artificialintelligence#ai#deeplearning#tech#datascience

Metric Recording

Metrics are important source of information to conclude the following: System healthAPI level monitoringApi latencySuccess and failureSignificant API for a business The main agenda of this design is to capture accurate metrics for XYZ services so that above inferences can be made through metric streams. Metric Recording and Reporting Design Overview: Metrics captured within XYZ … Continue reading Metric Recording →

Service Virtualization

We have deployed the API mocking/simulation layer on staging environment. The purpose of introducing this intermediate layer is to extricate the services from  dependency on the external peripheral systems.We have achieved this using Hoverfly(https://docs.hoverfly.io/en/latest/#), which provides service virtualization, wherein 1. We can record realtime requests and responses. 2. Replay the recorded requests. 3. Edit the responses to fulfil specific requirements 4. … Continue reading Service Virtualization →

Auth Mechanism(session, JWT, OAuth, 2Way SSL)

There are various ways to authenticate a user, lets discuss some of them. Session : its considered the simplest among all...... https://www.youtube.com/watch?v=sm-8qfMWEV8&list=PLqq-6Pq4lTTYTEooakHchTGglSvkZAjnE Two Way SSL How SSL works internally and mechanism behind encrypting the data that you sent over the network and how it identify you are the right one with whom browser is talking. … Continue reading Auth Mechanism(session, JWT, OAuth, 2Way SSL) →