Hi, DevOps fans Recently, 04.12.2023-05.12.2023. I have a pleasant occasion to perform AWS OpenSearch service performance benchmarks. The reason for that has a rather long story, but I will try to shorten it as much as possible. There is one application that uses Elasticsearch for performing different search operations. I will call it “Search App” below in text. Current application was migrated...
Hi, The more I am working at Software production area (and it is almost 20 years), the more I am coming to the conclusion, that support and maintenance in many cases are more essential then “beautiful” code with using design patterns. Don’t think that I have something against best practices – quite reverse. I am fond of design programming patterns and I am using it...
Hi, Elasticsearch fans. As probably all of you know, indexing of documents at Elasticsearch can appear to be a rather often operation. Changing fields mapping or document relationships, changing the number of shards and many other things force us to make reindexing of whole data. And when we have great amounts of data – then it appears to be a great problem. At that article we will speak...
Hi, Recently I’ve met a problem with REDIS memory usage at AWS ElastiCache service. It appeared that after some release, that happened 2 weeks ago, memory usage started to grow gradually like a snail. As result our memory monitoring caught the problem rather late. Here is the screen for AWS CloudWatch how it looked. While analyzing release by itself, I found a lot of changes related with...
Hi, That is the beginning of article’s series devoted to the deep insides of Elasticsearch cluster. I will try to describe the most interesting and useful aspects of how Elasticsearch works, what is shards, what makes impact at performance, how to choose hardware and what parameters should be under constant monitoring. I will try to explain all as simple as possible sharing my 8...
Hi, that is a higher level post that will include different articles around DevOps basics related to my udemy course “AWS devops: ElasticSearch at AWS with terraform and ansible“, but not only that 🙂 Here I will try to discuss next aspects: DevOps basics – e.g: who is devops, how to start devops learning career path, what are devops main duties and so on Terraform basics Ansible...
Hi, Current article is the introduction to the practice series of articles devoted to theme “How to work with ElasticSearch using Java and Spring Boot Framework”. You may treat it as Spring Boot ElasticSearch tutorial though you will get also additional deep knowledge at how to build search microservice from scratch, how to use programming patterns at real examples. So, lets start...
Hi, Current article is the introduction to the practice series of articles devoted to theme “How to work with ElasticSearch using Python and Flask framework”. You may treat it as Python ElasticSearch tutorial though you will get also additional deep knowledge at how to build search microservice from scratch, how to use programming patterns at real examples. So, lets start from task...
Hi, Current article is the introduction to the practice series of articles devoted to theme “How to work with ElasticSearch using Symfony PHP framework”. You may treat it as Symfony ElasticSearch tutorial though you will get also additional deep knowledge at how to build search microservice from scratch, how to use programming patterns at real examples. So, lets start from task...
At that article we are going to speak about Recommendation Systems. And we will start from theory as always. So what does it mean at all? Recommendation System (RS) – is a subclass of information filtering system that seeks to predict the “rating” or “preference” a user would give to an item. Recommender systems are used in a variety of areas. Examples: playlist...
