The blog for Design Patterns, Linux, HA and Myself!

21
June 2021

Using Hashicorp Vault with LDAP(OpenLDAP) based Login/Auth and Policy Authorization

20
June 2021

Vault installation with tutorial on Userpass authentication with Policy Authorization

19
June 2021

OpenLDAP installation on Ubuntu with practical examples using ldapadd, ldapmodify, etc.

01
November 2020

Leetcode Solution: Understand Minimum Score Triangulation of Polygon With Brute Force and Optimal Solution

19
October 2020

Understand Leetcode Longest Happy String(1405) With Brute Force and Optimal Solution

20
September 2020

Leetcode Solution: Understand Leetcode problem All Elements in Two Binary Search Trees(1305) Solution

20
September 2020

Leetcode Solution: Understand Leetcode problem Construct Binary Search Tree From Preorder Traversal(1008) Solution

19
September 2020

Leetcode Solution: Understand Leetcode problem Maximum Binary Tree(654) Solution

19
September 2020

Leetcode Solution: Understand Leetcode problem Sum of Nodes With Even Valued Grandparent(1315) Solution

19
September 2020

Leetcode Solution: Understand Leetcode problem Deepest Leaves Sum(1302) Solution

13
September 2020

Leetcode Solution: Understand and solve Leetcode problem Symmetric Tree or Mirror Tree (101)

13
September 2020

Leetcode Solution: Understand and solve Leetcode problem Diameter of Binary Tree(543)

13
September 2020

Leetcode Solution: Understand and solve Leetcode problem Binary Tree Paths(257)

12
September 2020

Leetcode Solution: Understand Leetcode problem Cousins in Binary Tree(993) Solution

12
September 2020

Leetcode Solution: Understand Leetcode problem Sum of Left Leaves(404) Solution

12
September 2020

Leetcode Solution: Understand and solve Leetcode problem Same Tree(100)

12
September 2020

Leetcode Solution: Understand and solve Leetcode problem Minimum Absolute Difference in BST(530)

06
September 2020

Leetcode Solution: Understand and solve Leetcode problem Construct String From Binary Tree(606)

06
September 2020

Leetcode Solution: Understand and solve Leetcode problem Two Sum IV - Input is a BST Solution(653)

05
September 2020

Leetcode Solution: Understand and solve Leetcode problem Convert BST to Greater Tree Solution(538)

05
September 2020

Leetcode Solution: Understand and solve Leetcode problem Convert Sorted Array to Binary Search Tree(108)

30
August 2020

Leetcode Solution: Understand and solve Leetcode problem Average of Levels in Binary Tree(637)

30
August 2020

Leetcode Solution: Understand and solve Leetcode problem Leaf Similar Trees(836)

30
August 2020

Leetcode Solution: Understand and solve Leetcode problem Sum of Root to Leaf Binary Numbers(1022)

25
August 2020

Leetcode Solution: Understand and solve Leetcode problem Univalued Binary Tree(965)

25
August 2020

Leetcode Solution: Understand and solve Leetcode problem Maximum Depth of N Ary Tree(559)

23
August 2020

Leetcode Solution: Understand and solve Leetcode problem Increasing Order Search Tree(897)

23
August 2020

Leetcode Solution: Understand and solve Leetcode problem Merge two binary trees(617)

22
August 2020

Leetcode Solution: Understand Leetcode problem Range Sum of BST(938) With a Brute Force and Optimal Solution

16
August 2020

Leetcode Solution: Understand Leetcode problem Integer Break (343) With a Brute Force and Optimal Solution

01
August 2020

Leetcode Solution: Understand Leetcode problem Longest Arithmetic Sequence With a Brute Force and Optimal Solution

01
August 2020

Leetcode Solution: Understand Leetcode problem Longest Zig Zag Path in a Binary Tree With a Brute Force and Optimal Solution

26
July 2020

Leetcode Solution: Understand Leetcode Minimum Path Sum With Brute Force and Optimal Solution

21
July 2020

InfluxDB Out of Memory: Ways to Debug and solve the influxDB Out of Memory(OOM) issue

17
July 2020

Understand Arithmetic Slices(413 Leetcode) With Brute Force and Optimal Solution

12
July 2020

Understand Leetcode Count Submatrices With All Ones(1504) With Brute Force and Optimal Solution

04
June 2020

Change to center alignment code editor for Intelliji IDEs

30
May 2020

Understand Leetcode Filling Bookcase Shelves Optimal Solution

24
May 2020

Understand Leetcode Minimum Cost for Tickets With Brute Force and Optimal Solution

16
May 2020

Understand Leetcode Airplane Seat Assignment Probability With Brute Force and Optimal Solution

19
February 2020

Proxy Pattern or Proxy Design Pattern: Learn Proxy Design Pattern with a Real World example by looking into How Hibernate ORM works!

15
February 2020

State Pattern or State Design Pattern: Learn State Design Pattern with a Real World example by creating a Document Management Application

09
February 2020

Composite Pattern or Composite Design Pattern: Learn Composite Design Pattern with Real World Example by creating an HTML parser

02
February 2020

Learn GitHub Actions and Workflows by creating a workflow pipeline from Scratch

02
February 2020

Template Design Pattern or Template Method Design Pattern: Learn Template Method Design Pattern through aR Real World Example by creating a Report Generator

19
January 2020

Adapter Pattern or Adapter Design Pattern: Learn the Adapter Design Pattern with a Real World Example using a Currency Converter

11
January 2020

Command Pattern or Command Design Pattern: Learn Command Design Pattern with a Real World Example of Quartz Scheduler

01
January 2020

Singleton Pattern or Singleton Design Pattern: Learn Singleton Design Pattern with a real world example by creating a Configuration Manager

28
December 2019

Factory Design Pattern or Factory Method Design Pattern: Learn Factory Method Design Pattern from Real World Example by creating a Milk Shake Factory

28
December 2019

Factory Pattern or Simple Factory Design Pattern: Learn Simple Factory Design Pattern from Real World Example by creating a Milk Shake Factory

25
December 2019

Decorator Pattern or Decorator Design Pattern: Learn Design Pattern Decorator with a Real World Example by creating a Coffee Ordering System

25
December 2019

Observer Pattern or Observer Design Pattern: Learn Observer Design Pattern in detail from a Real World Example by creating a Magazine's Subscription System

21
December 2019

Strategy Pattern or Strategy Design Pattern: Learn Strategy Design Pattern by understanding a Real World example of hierarchies that involves interfaces, inheritance and ducks!