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Optimizing Data Transfer Cost on AWS Infrastructure
Most of you would surely agree that AWS billing mechanism is too complex and difficult to understand if you have limited experience with it. Any AWS bill where the system is internet facing and using different distributed systems internally, it is not unusual to see 15-20% bill pertaining to data transfer cost of over all AWS…
Optimizing Infrastructure Cost for Next.js Server Side Rendered Pages (SSR)
With the changes announced by Google last year regarding how they are going to measure Google Core Web Vitals (LCP, FID, CLS) for web apps, SSR (Server Side Rendered Pages) became the survivor to avoid any downgrading on SEO front from Google. Most of the business websites running on Client-Side Rendered (CSR) React application moved…
Fixing MySQL errors (Lockwait timeout/ Deadlocks) In High Concurrent Spring Boot Transactional Systems
Nearly every engineer working with relational database management systems has encountered deadlocks or Lockwait Timeouts, or let’s be honest, been haunted by the nightmare of them. HealthKart also encountered a similar issue. Back-to-back deadlocks hampered our user experience, especially during Sale Seasons owing to the high concurrency. This kept us all night leaving us begging…
How We Improved our App Startup and Navigation Time on Android App
Our Engineering team at HealthKart has a keen focus on improving the performance and making the system scalable for better user experience. Our Mobile Development team encountered couple of bottlenecks which was causing the issue on the performance side and hence a bad user experience score on the different performance metrics. Few of the important…
Scaling Regression Test Cases through parallelism – A Cloud Native Approach
Introduction In the game of balancing out agility , quality and velocity for continuous business changes, automation regression keeps on growing along with your code base. A single line of code change in business logic results in creating multiple regression test cases. Also, it gets multi folded because this has to be tested on multiple…
Moving to SSR and Managing Google Core Web Vitals
As a company we are always focussed on the performance of our core web sites. However, with Google recently announcing that Core Web Vitals will be used as signals to the SEO indexing on mobile, the performance became the number one priority. Having figured out that React Client side App may not be the best…
Using EDA and K-Means for food similarity and diet chart
Health and wellness is complex thing and needs a holistic approach in your lifestyle to achieve and maintain it . Food is an important pillar for your health and fitness. Complexity increases as we move into details of food items to classify what is healthy and what is unhealthy that too taking the consideration of…
How to track sleep through Android app
Introduction Our HealthKart application helps users to achieve help and fitness goal through our digital platform. Achieving help and fitness goal requires lots of things to be incorporated in daily routine and sleep is an important parameter for the same. Sleep tracking can be done through couple of methodology and one of the popular way…
Adding In App Video Chat Support – Things to consider
Pandemic has given exponential rise to video communication adoption to the digital platform to have better personal support service to customers. If you have a digital property, In-App video chat becomes an important aspect of the same. From a technology perspective, there are multiple options to choose from when it comes to implementation for the…
When not to use Microservices
There is nothing like a silver bullet that exists in this world which can solve all your problems. In the field of medicine, certain medications can help in fighting only certain diseases. A medication for headache can not be used for diabetic care or curing eye problems. Certain medications also not suitable in a few…
API Gateway- Front Controller to our Microservices
What is an API Gateway? An API Gateway is the first step towards diving into a microservices architecture. It is a type of proxy server which sits in front of all our backend services and provides a unified interface to the clients.It acts as the single entryway into a system allowing multiple APIs or microservices…
Real time Analytics Pipeline Using AWS
At HealthKart, we use lambda architecture for building real time analytics pipeline. However the most critical part in this setup is picking the framework which are extensible and does not cost a heavy toll on your infrastructure cost. Keeping these thing in mind, AWS was the most viable option to have lambda architecture for achieving…
Technology Dilemma – Build vs Buy
One of the most difficult and tricky situations you come along in tech leadership role is to make a decision whether the particular functional piece should be built in house or you should just buy it and integrate with your tech landscape. Every decision that we take in our professional or personal life is mostly the…
Google Sheet and HKConnector – Bulk processing Engine @ Healthkart
Process optimization becomes a necessity when any organization grows and flourishes. This optimization could be in any vertical technical, functional, business or financial and in any form of efficiency, stack, methodologies or roadmaps, etc , but each of these needs to leverage the existing system workflow to scale up and, redefine itself from the intelligence…
Transfer Learning – Our plunge into making an object detector
The ability of making a computer learn and localize objects is one of the many applications for a technology like Computer Vision and Deep learning , most precisely called object detection. We had a task of building a custom object detector such that the model could predict food labels from food images and can be…
Hazelcast – Distributed Locking and Inventory Management System
Distributed locking management becomes absolute building block for high scale system where data consistency is a top priority. Systems like online booking/inventory management where hundred and thousands requests gets process in parallel, this becomes a must have to maintain the consistency of data. HealthKart being a omni-channel platform for selling health supplement and sport nutrition,…
Using Our Brains – Neuromarketing, Hands-Free Gaming & Rise Of EEG Headset
Overview Many people have eagerly awaited the day they can control technology using just their brains. Electroencephalography (EEG) is a monitoring method to record the electrical activity of the brain. The clinical definition of EEG is the recording of brain activity over a period of time. Wearable EEG headsets position noninvasive electrodes along the scalp. EEG electrodes pick up…
Graph Databases – Engine behind Healthkart’s Inventory Management
Overview Managing inventory to produce consistent and reliable results in any ERP system across multiple channels of sale can be a challenging task. Supply chains are becoming more and more vast and complex. With the omni-channel approach to sales kicking in – the system needs to be mindful of issues like the visibility of inventory…
Flowable – Engine for Automated Workflows @HealthKart
Automated business workflows are essentials for any organization. There are multiple options to automate your business workflows using tools and SaaS products available in the market. However, it becomes more challenging if you have several of internal systems that in running and managed internally and it needs integration with them. One can opt for building…
Why we migrated our CDN from AWS to Cloudflare
Content Delivery Network (CDN) is a critical piece in your app eco system as it ensures faster delivery of your media and static content to your app users. Since our complete infrastructure is hosted on AWS, CDN services were being availed from AWS itself. On side note, I am a big AWS fan and during…
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