From d8b7986a6de2a70acdeb6438f40486050b60c544 Mon Sep 17 00:00:00 2001
From: Kyle Thorpe <kjthorpe18@gmail.com>
Date: Fri, 21 Jan 2022 09:08:18 -0500
Subject: [PATCH 1/2] Description and resources for SOLID (#1021)

Add a description and resources for the SOLID design principles
---
 .../103-solid.md                                 | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/content/roadmaps/101-backend/content/114-design-and-development-principles/103-solid.md b/content/roadmaps/101-backend/content/114-design-and-development-principles/103-solid.md
index 7d6790eb1..93341b0d8 100644
--- a/content/roadmaps/101-backend/content/114-design-and-development-principles/103-solid.md
+++ b/content/roadmaps/101-backend/content/114-design-and-development-principles/103-solid.md
@@ -1 +1,15 @@
-# Solid
\ No newline at end of file
+# SOLID
+
+SOLID is a set of principles applied to object-oriented design (OOD) to create maintainable, understandable, and flexible code, while avoiding code smells and defects. The principles are:
+
+- Single Responsibility
+- Open/Closed
+- Liskov Substitution
+- Interface Segregation
+- Dependency Inversion
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='blue' badgeText='Original Paper' href='https://web.archive.org/web/20150906155800/http://www.objectmentor.com/resources/articles/Principles_and_Patterns.pdf'>Design Principles and
+Design Patterns</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.baeldung.com/solid-principles'>SOLID Principles</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.digitalocean.com/community/conceptual_articles/s-o-l-i-d-the-first-five-principles-of-object-oriented-design'>SOLID: The First 5 Principles of Object Oriented Design</BadgeLink>

From a0095a9b96ca06422f4ed281aa779bc42abce3ec Mon Sep 17 00:00:00 2001
From: Sachin Kotian <40201009+flashnoob@users.noreply.github.com>
Date: Sat, 22 Jan 2022 11:59:50 +0530
Subject: [PATCH 2/2] Update 100-elasticsearch.md (#1011)

* Update 100-elasticsearch.md

* Add elasticsearch details

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>
---
 .../content/116-search-engines/100-elasticsearch.md   | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/content/roadmaps/101-backend/content/116-search-engines/100-elasticsearch.md b/content/roadmaps/101-backend/content/116-search-engines/100-elasticsearch.md
index 1c01a877a..882db2bc2 100644
--- a/content/roadmaps/101-backend/content/116-search-engines/100-elasticsearch.md
+++ b/content/roadmaps/101-backend/content/116-search-engines/100-elasticsearch.md
@@ -1 +1,10 @@
-# Elasticsearch
\ No newline at end of file
+# Elasticsearch
+
+Elastic search at its core is a document-oriented search engine. It is a document based database that lets you INSERT, DELETE , RETRIEVE and even perform analytics on the saved records. But, Elastic Search is unlike any other general purpose database you have worked with, in the past. It's essentially a search engine and offers an arsenal of features you can use to retrieve the data stored in it, as per your search criteria. And that too, at lightning speeds.
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+
+<BadgeLink colorScheme='blue' badgeText='Official Website' href='https://www.elastic.co/elasticsearch/'>Elasticsearch Website</BadgeLink>
+<BadgeLink colorScheme='blue' badgeText='Official Docs' href='https://www.elastic.co/guide/index.html'>Elasticsearch Documentation</BadgeLink>
+
+