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ElasticSearch & Kibana – Must for All Search Engine Development

How often there is a need to create a search engine within an organisation or even on a customer portal where search is fast, secure, accurate and learns over a period of time , the article shows how you can use Elasticsearch along with Kibana to build a world class search products.

Interms of ElasticSearch , you can consider each index as a database table and each index can have multiple line items , example a bookshop index can have many books which needs to be searched.

Kibana is a front end UI that interacts with Elastic Search where most of these content management activities can be done

Most Important part about search is not only being able to return results faster but also be able to manage synonyms example – user searching for ‘Bakery item‘ can have results that has ‘Cooking cakes ‘ , user looking for book on ‘Paneer‘ might actually be looking for a book on ‘Cottage cheese‘

let us start by creating an index , Use Dev Tools in Kibana Web UI

Request 
PUT bookshop
{
"settings" : {
"index" : {
"number_of_shards" : 1,
"number_of_replicas" : 1
}
}
}
Response
{
"acknowledged" : true,
"shards_acknowledged" : true,
"index" : "bookshop"
}

Let us add few books to bookshop

 Request
PUT bookshop/books/1
{
"title": "Bake with Shivesh",
"description" : "Food styling has become a skill many want to master, but don't know how. Popular food blogger and maverick baker Shivesh Bhatia is here to help. Twenty-two-year-old Shivesh enjoys a massive following on his blog and Instagram. Brands love him and so do people. In Bake with Shivesh, the ace baker reveals foolproof tips on food styling that can be easily followed at home, in your kitchen, with tools you already own. He also talks about his favourite styling techniques, and what works or doesn't on different social media platforms. This is a book for everyone looking to elevate the way they present food, to help boost their blogs and businesses, and to make food look as good as it tastes.",
"author": "Shivesh Bhatia"
}
Response
{
"_index" : "bookshop",
"_type" : "books",
"_id" : "1",
"_version" : 1,
"result" : "created",
"_shards" : {
"total" : 2,
"successful" : 1,
"failed" : 0
},
"_seq_no" : 0,
"_primary_term" : 1
}

Add few more books

 Request
PUT bookshop/books/2
{
"title": "Can't Believe It's Eggless!",
"description" : "If you’re someone that does not eat eggs, baking is the final frontier. And this exact problem is what master baker and acclaimed entrepreneur, Pooja Dhingra, resolves with her third book, I Can’t Believe It’s Eggless. Having baked without eggs herself, and catered to customers at Le15, her beloved chain of patisseries and cafes, she knew that a book of eggless recipes written for the Indian kitchen was a long time coming. And so Pooja combined her skills as a classically-trained patissier with her love for taking on a challenge to create over a hundred eggless recipes for everything from cookies and brownies to decadent cakes, doughnuts and mousses. I Can’t Believe It’s Eggless lives up to its name with delicious recipes that are second to none. Plus, Pooja offers invaluable tips on how to stock your pantry, choose the right substitute for eggs, and perfect the art of baking. ",
"author": "Pooja Dhingra"
}
PUT bookshop/books/3
{
"title": "How to Cake It: A Cakebook",
"description" : "YOLANDA GAMPP is a self-taught master cake artist who started out baking novelty cakes in her mother’s kitchen and is now the host of the successful YouTube channel “How to Cake It.” “How to Cake It” has built a community of more than six million cake enthusiasts from around the world. Yolanda and her work have been featured on the Today show, The Social, Cityline, Breakfast Television, the Food Network show SugarStars, and in BuzzFeed. A graduate of George Brown College’s culinary arts program in Toronto, Yolanda quickly discovered that her true passion was working with sweets, and she was further inspired by her father, who worked as a baker. She lives in Toronto. ",
"author": "Yolanda Gampp"
}
Response
PUT bookshop/books/2
{
"_index" : "bookshop",
"_type" : "books",
"_id" : "2",
"_version" : 1,
"result" : "created",
"_shards" : {
"total" : 2,
"successful" : 1,
"failed" : 0
},
"_seq_no" : 1,
"_primary_term" : 1
}
PUT bookshop/books/3
{
"_index" : "bookshop",
"_type" : "books",
"_id" : "3",
"_version" : 1,
"result" : "created",
"_shards" : {
"total" : 2,
"successful" : 1,
"failed" : 0
},
"_seq_no" : 2,
"_primary_term" : 1
}

Search Books

GET bookshop/_search
{
"query": { "match": { "title": "Cake" } }
}
Response
{
"took" : 0,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : 1,
"max_score" : 0.8474839,
"hits" : [
{
"_index" : "bookshop",
"_type" : "books",
"_id" : "3",
"_score" : 0.8474839,
"_source" : {
"title" : "How to Cake It: A Cakebook",
"description" : "YOLANDA GAMPP is a self-taught master cake artist who started out baking novelty cakes in her mother’s kitchen and is now the host of the successful YouTube channel “How to Cake It.” “How to Cake It” has built a community of more than six million cake enthusiasts from around the world. Yolanda and her work have been featured on the Today show, The Social, Cityline, Breakfast Television, the Food Network show SugarStars, and in BuzzFeed. A graduate of George Brown College’s culinary arts program in Toronto, Yolanda quickly discovered that her true passion was working with sweets, and she was further inspired by her father, who worked as a baker. She lives in Toronto. ",
"author" : "Yolanda Gampp"
}
}
]
}
}

PROBLEM comes when user is searching for a book on baking and we instead have a book on making cakes, We get 0 results as shown below

GET bookshop/_search
{
"query": { "match": { "title": "Baking" } }
}
Response
{
"took" : 0,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : 0,
"max_score" : null,
"hits" : [ ]
}
}

ElasticSearch Synonyms come our to rescue.. – Would it not be great if we say that a book on baking is same as a book on making cakes, or a book on tandoori chicken is same as Indian non veg cooking ?

So let us start building a Synonym where we say Cake, Bakery, Baking are all related words and see how it works

PUT /bookshop/_settings
{
"settings": {
"index" : {
"analysis" : {
"filter" : {
"synonym_filter" : {
"type" : "synonym",
"synonyms" : [
"Cake, Bakery, Baking"
]
}
},
"analyzer" : {
"synonym_analyzer" : {
"tokenizer" : "standard",
"filter" : ["lowercase", "synonym_filter"]
}
}
}
}
},
"mappings": {
"books": {
"properties": {
"title": {
"type": "text",
"analyzer": "synonym_analyzer"
}
}
}
}
}
Response
{
"error": {
"root_cause": [
{
"type": "illegal_argument_exception",
"reason": "Can't update non dynamic settings [[index.analysis.filter.synonym_filter.type, index.analysis.filter.synonym_filter.synonyms, index.analysis.analyzer.synonym_analyzer.filter, index.analysis.analyzer.synonym_analyzer.tokenizer]] for open indices [[bookshop/2QUYHij-TfKLOLcGVindog]]"
}
],
"type": "illegal_argument_exception",
"reason": "Can't update non dynamic settings [[index.analysis.filter.synonym_filter.type, index.analysis.filter.synonym_filter.synonyms, index.analysis.analyzer.synonym_analyzer.filter, index.analysis.analyzer.synonym_analyzer.tokenizer]] for open indices [[bookshop/2QUYHij-TfKLOLcGVindog]]"
},
"status": 400
}

Since the was index is already made it is not allowing us to add a Synonym , its important to close the index , create synonym and then reopen

You might want to delete the index created before adding Synonyms or just close and reopen index

DELETE  /bookshop/?pretty
POST /bookshop/_close
PUT /bookshop/_settings
{
"settings": {
"index" : {
"analysis" : {
"filter" : {
"synonym_filter" : {
"type" : "synonym",
"synonyms" : [
"Cake, Bakery, Baking"
]
}
},
"analyzer" : {
"synonym_analyzer" : {
"tokenizer" : "standard",
"filter" : ["lowercase", "synonym_filter"]
}
}
}
}
},
"mappings": {
"books": {
"properties": {
"title": {
"type": "text",
"analyzer": "synonym_analyzer"
}
}
}
}
}
POST /bookshop/_open
Response
POST /bookshop/_close
{
"acknowledged" : true
}
PUT /bookshop/_settings
{
"acknowledged" : true
}
POST /bookshop/_open
{
"acknowledged" : true,
"shards_acknowledged" : true
}
GET bookshop/_search
{
"query": { "match": { "title": "How to Bake It: A Cakebook" } }
}
Observe the Results Ranking below -
Response
{
"took" : 0,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : 2,
"max_score" : 4.237419,
"hits" : [
{
"_index" : "bookshop",
"_type" : "books",
"_id" : "3",
"_score" : 4.237419,
"_source" : {
"title" : "How to Cake It: A Cakebook",
"description" : "YOLANDA GAMPP is a self-taught master cake artist who started out baking novelty cakes in her mother’s kitchen and is now the host of the successful YouTube channel “How to Cake It.” “How to Cake It” has built a community of more than six million cake enthusiasts from around the world. Yolanda and her work have been featured on the Today show, The Social, Cityline, Breakfast Television, the Food Network show SugarStars, and in BuzzFeed. A graduate of George Brown College’s culinary arts program in Toronto, Yolanda quickly discovered that her true passion was working with sweets, and she was further inspired by her father, who worked as a baker. She lives in Toronto. ",
"author" : "Yolanda Gampp"
}
},
{
"_index" : "bookshop",
"_type" : "books",
"_id" : "1",
"_score" : 1.1220686,
"_source" : {
"title" : "Bake with Shivesh",
"description" : "Food styling has become a skill many want to master, but don't know how. Popular food blogger and maverick baker Shivesh Bhatia is here to help. Twenty-two-year-old Shivesh enjoys a massive following on his blog and Instagram. Brands love him and so do people. In Bake with Shivesh, the ace baker reveals foolproof tips on food styling that can be easily followed at home, in your kitchen, with tools you already own. He also talks about his favourite styling techniques, and what works or doesn't on different social media platforms. This is a book for everyone looking to elevate the way they present food, to help boost their blogs and businesses, and to make food look as good as it tastes.",
"author" : "Shivesh Bhatia"
}
}
]
}
}

If We want to fine tune our search with Title containing Bake and Author as Shivesh, we need to use a bool and must , match together

 GET bookshop/_search
{
"query": {
"bool": {
"must": [
{ "match": { "title": "Bake" } },
{ "match": { "author": "Shivesh" } }
]
}
}
}
Response
{
"took" : 0,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : 1,
"max_score" : 2.102898,
"hits" : [
{
"_index" : "bookshop",
"_type" : "books",
"_id" : "1",
"_score" : 2.102898,
"_source" : {
"title" : "Bake with Shivesh",
"description" : "Food styling has become a skill many want to master, but don't know how. Popular food blogger and maverick baker Shivesh Bhatia is here to help. Twenty-two-year-old Shivesh enjoys a massive following on his blog and Instagram. Brands love him and so do people. In Bake with Shivesh, the ace baker reveals foolproof tips on food styling that can be easily followed at home, in your kitchen, with tools you already own. He also talks about his favourite styling techniques, and what works or doesn't on different social media platforms. This is a book for everyone looking to elevate the way they present food, to help boost their blogs and businesses, and to make food look as good as it tastes.",
"author" : "Shivesh Bhatia"
}
}
]
}
}

So there 2 magic’s that ElasticSearch has done

  1. Searching for Bake will bring in a book by title Cake
  2. It Ranks 2 books containing the word Bake but the one with the closest search word match is ranked higher in search results

Enjoying Searching 🙂 and hit like if you really liked reading about it

https://www.linkedin.com/pulse/elasticsearch-kibana-must-all-search-engine-development-rao/

Log in
  • Archive Blogs
    • Cloud-Blogs by Madhusudhan Rao
      • ADF
        • ADF based Android Apps
        • ADF CRUD Cascaded LOVs
        • ADF CRUD Operation
        • ADF for Dummies
        • ADF for Financial Services Software Development
      • Analytics & Visualization
        • Business Intelligence
        • Oracle BI & DV Cloud Service
        • setting up Oracle Analytics Cloud Instance and Data Visualization Techniques
      • App Servers & DevOps
        • How to deploy NodeJS Application on Oracle Application Container Cloud Service
        • Oracle Application Container Cloud Service
        • Oracle Java Cloud Service
      • Architecture
        • 01 Enterprise Business
        • 02 Content framework
        • 03 Enterprise Continuum
        • 04 Maturity Models
        • 05-Architecture Governance
        • 06-Preliminary Phase
        • 07-Architecture Vision
        • 08-Business Architecture
        • 09-Info Sys Architecture
        • 10-Tech Architecture
        • 11 Opportunities & Solns
        • 12-Migration Planning
        • 14 Implementation Governance
        • 15 Change Management
        • 16-Requirement Management
        • 17 Reference Models
        • Cloud Architecture Concepts
          • 01 Architecture Concepts - Regulatory Compliance, Security monitoring and Storage protocols
          • 02 Architecture - Network Concepts and Bare Metal
          • 03 Enterprise Solution Architecture - Best Practices
          • 04 Cloud Architecture Concepts
        • Value Selling Techniques
      • OCI Admin Blogs
        • Create Oracle Cloud Infrastructure Instance
        • ElasticSearch & Kibana - Must for All Search Engine Development
        • How to Create Oracle Bare metal Compute Instance
        • Measuring Latency and TraceRoute Details with Oracle Edge Services
        • OCI Oracle cloud infrastructure - Setting up a NAT Instances for Public Internet Access from a Private Subnet
        • Oracle Cloud Infrastructure - OCI Creating buckets and object storage - setting up self expiry URLs
        • Oracle Cloud Infrastructure OCI - Create Instance ,Attach Block Volume , Open Ports, Setup Firewall rules
        • Python Basics
        • setting up Apache Tomcat on Oracle Cloud Infrastructure OCI
        • setting up CloudFlare DNS & HAProxy on Oracle Cloud Infrastructure for High Availability
        • Setting up Django Python Web Environment on Oracle Cloud
        • setting up File Storage on OCI and uploading files through Filezilla FTP
        • Setting up GPU-enabled Narupa server on Oracle Bare Metal Cloud for Virtual Reality Clients
        • setting up LAMP Stack , PHP 5.6, PhpMyAdmin , FTP and Mail Server on OCI
        • setting up Load Balancer on Oracle Cloud Infrastructure
        • setting up MongoDB Enterprise version Instance on Oracle Cloud Infrastructure Baremetal
        • setting up MongoDB on Oracle Cloud Infrastructure Classic and Opening Ports
        • Setting up SSH , FTP and Opening Ports on Oracle Cloud PaaS and IaaS
        • setting up web infrastructure DNS and HTTPS for your cloud Infrastructure as a Service OCI
        • World of Slack Programming
      • OCI Classic Blogs
        • How to Create WordPress blog on Oracle Cloud
        • running Function as a Service on Oracle Cloud Infrastructure - fnproject.io
        • running Hadoop & Big Data on Oracle Cloud Infrastructure
        • running TensorFlow Machine Learning for Image Recognition on Oracle Cloud Infrastructure
        • Setting up Kubernetes on Oracle Cloud Infrastructure - Classic
      • Oracle BPM for Financial Services
        • BPM for FS
        • 1. Setting up the development environment
        • 2. Modeling a home loan business process
        • 3. Implementing a home loan business process
        • 4. Deploying and testing a process workflow
        • 5. Administering processes
        • 6. Changing a business process by the process analyst
        • 7. Creating business reports for process owners
        • 8. Participating in a business process
        • 9. Integrating with business partners
        • 10. Collaborating with customers and end users
      • Oracle JET Series
    • Dockers on OCI Series
      • Comprehensive Blog on Dockers running on OCI
      • running a Docker Container on OCI
      • opening OCI Ports for Docker Containers
      • Building a Docker Image by using Dockerfile
      • Committing changes made in a Docker without using Dockerfile
      • pushing image to Docker Hub
      • DevOps with Github, Docker Hub and Oracle Container Cloud Services
      • running Apache Kafka for continuous data streaming on Oracle cloud infrastructure
    • Oracle Database Cloud Service
    • Oracle OKE Series
      • 01 Comprehensive Blog on Oracle Kubernetes Engine - getting started
      • 02 Configure Network Resources for Oracle Kubernetes Engine
      • 03 Creating 3 Worker and 2 Load Balancers Subnets for OKE
      • 04 Creating Oracle Kubernetes Cluster
      • 05 - Enable Cluster access through Command line interface
      • 06 - Getting onto Oracle Kubernetes Engine Dashboard
      • 07 Pod Configuration using a YAML Deployment
    • setting up and running Oracle Big Data PaaS
    • Setting up MySQL PaaS on Oracle Cloud
    • SOA BPM IDM Portal Series
      • FMW
        • Comprehensive Business Process Management - BPM 11g
        • FMW Install Startup Scripts
        • Oracle 11gR2 and 12c Database on Linux / OEL / Fedora
        • Oracle Identity Mangement
        • PS6, PS7, PS8 Install and Configuration
      • Webcenter Portal
        • Art of Webcenter Templating
        • Webcenter Sites Installation Linux
        • Webcenter Sites Look n feel
        • Webcenter Spaces
          • Custom Landing Page
        • Webcenter UCM Integration PS5
        • Webcenter, BPM Process Spaces - UCM PS5
        • BPM UCM and Webcenter PS5
      • BPM Series
        • 01-Simple BPM Task Initiator
        • 02-Business Rules and Exclusive Gateway
        • 03-Service Invocation Adapters
        • 04-BPM as a Web Service
        • 05-Mediator and Conditional Service Routing
        • 06-BPM Composer - Runtime Edit
        • 07-BPM and JMS Adapters
        • Oracle BPM 12c features
      • Process Cloud Service
        • Part 1 - Working with Process Cloud Service
        • Part 2 – How to Build Process , Data Persistence in Database Cloud Service
        • Part 3 – Invoking PCS Process from Oracle JET Framework
      • SOA Series
        • Oracle OSB 11g
        • Oracle SOA 11g Business Rules
        • Oracle SOA 11g DB Adapter
        • Oracle SOA 11g Mediator
        • SOA 11g AQ Adapters
    • Terraform on OCI Series
      • Create a Highly Scalable Cluster in the cloud using Terraform on OCI
      • Creating an Instance with New VNC Network
      • Managing the OCI Cluster with Slurm Workload Manager & Grafana
      • Terraform on OCI create instance
      • Terraform on OCI create load balancer
      • Terraform on OCI create non-federated user
      • Terraform on OCI create user, group, dynamic group and policies
      • Terraform on Oracle Cloud OCI
  • Database Developer Series
  • Database Series
    • Autonomous Data Warehouse and Analytics
      • 01 Preparing Client Machine
      • 02 Creating Autonomous Data Warehouse Instance
      • 03 Creating Tables into Autonomous Data Warehouse through SQL Developer
      • 04 Load Data into OCI Object storage and import that data into Autonomous Data warehouse
      • 05 Create Autonomous Analytics Cloud ADW Connection and create Data Visualization
    • Oracle Apex Cloud Service

"Technology has the shelf life of a banana. By the time you buy it, implement it and train people on it, it’s obsolete. … ” as said by Mr Scott McNealy

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