I always used Redis as plain Hashmap where keys and values are just strings. Slowly I forgot Redis supports a couple data types (Lists, Sets, Sorted Sets, Hashes) until one of our Real-time machine learning prediction application gave trouble due Continue Reading
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Build the MNIST model with your own handwritten digits using TensorFlow, Keras, and Python
This post will give you an idea about how to use your own handwritten digits images with Keras MNIST dataset. If you don’t know how to build a model with MNIST data please read my previous article. Recently one guy Continue Reading
Solving Curious case of MountainCar reward problem using OpenAI Gym, Keras, TensorFlow in Python
This post will help you to write gaming bot for less rewarding games like MountainCar using OpenAI Gym and TensorFlow. Once I built a model for playing CartPole game felt confident and thought let’s write code for one more game Continue Reading
Build your First AI game bot using OpenAI Gym, Keras, TensorFlow in Python
This post will explain about OpenAI Gym and show you how to apply Deep Learning to play a CartPole game. Whenever I hear stories about Google DeepMind’s AlphaGo, I used to think I wish I build something like that at Continue Reading
Handling Big Numbers/Integers in Node.js at the time of Cassandra full table scan
Right now around 100 Gigabytes of data gets generated related to user activities at our company’s different applications/products. The product which I am working on basically consumes all of that and gives insights about users behavior and also helps to Continue Reading
Running PySpark with Cassandra using spark-cassandra-connector in Jupyter Notebook
We are facing several out of memory issues when we are doing operations on big data which present in our DB Cassandra cluster. So we decided its better to use Spark to solve this problem. It became a tough & Continue Reading
Run your first Spark program using PySpark and Jupyter notebook
I think almost all whoever have a relationship with Big Data will cross Spark path in one way or another way. I know one day I need to go for a date with Spark but somehow I was postponing for Continue Reading
How to pass a Variable or Argument to a callback function in Node.js
Recently I was taking Node.js classes for company’s training batch. I was explaining about the code reusability & callback functions at that time. At that time came across an interesting problem due to the assignment I gave to them. The Continue Reading
Profiling Node.js application using v8-profiler
As I mentioned in my previous article we are working on an application where 1ms extra CPU consumption per request is also a big deal. Adding profiler wrapper and getting the trace is ok up to one level but you Continue Reading
Review your Express.js application performance by yourself
As Mentioned in my previous articles we are working on an application which processes around 25000 requests per minute. We use only 2 core CPU machine to receive these many requests and push it to Kafka. We are confident that Continue Reading