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MongoDB Transactions

Multi-document ACID transactions ensuring data integrity across multiple operations, allowing atomic commits and rollbacks in replica set environments.

MongoDB

MongoDB Projection

Projection allows you to select specific fields to return from a query, reducing data transfer and improving query performance.

MongoDB

MongoDB $lookup

Perform left outer join between two collections in MongoDB, allowing you to combine documents from different collections based on a matching condition.

MongoDB

MongoDB Indexing

Create a compound index to improve query performance by indexing multiple fields in a specific order for efficient document retrieval.

MongoDB

MongoDB Indexing Strategies

Understand different types of indexes in MongoDB to optimize query performance and reduce document scanning time.

MongoDB

MongoDB Group Stage

Learn how to use $group to aggregate and summarize data by grouping documents and performing calculations like sum, average, count.

MongoDB

Document Validation

MongoDB's schema validation allows defining rules to enforce data integrity and structure when inserting or updating documents in a collection.

MongoDB

Compound Indexes

Create multi-field indexes to optimize query performance for complex queries that filter or sort on multiple document fields simultaneously.

MongoDB

MongoDB Compound Index

Compound indexes in MongoDB allow you to create an index on multiple fields, improving query performance for searches involving those specific fields in combination.

MongoDB

MongoDB Aggregation Pipeline

Powerful data processing and analysis tool that allows complex transformations and computations on document collections using multiple stages.

Linux

Signal Handling

Mechanism for handling asynchronous events in Linux. Signals are software interrupts sent to a program to indicate a specific event or condition.

Linux

ps Command Basics

Learn how to view running processes in Linux using the 'ps' command with common options for process information and filtering.

Linux

Pipe Operator

The pipe (|) operator in Linux allows you to chain commands, sending the output of one command as input to another, enabling powerful data processing workflows.

Linux

Pipe Command Chain

Combine multiple Linux commands using pipes to filter, process, and transform text data efficiently in a single command line

Linux

Fork System Call

Create a new process by duplicating the calling process. The child process is an exact copy of the parent, running concurrently.

Linux

Find Large Files

Quickly locate and list files larger than a specified size in Linux using the find command with size parameter

Linux

Find Command Basics

Powerful Linux utility to search for files and directories with complex filtering options across file systems

Linux

chmod Basics

Change file permissions using numeric or symbolic modes in Linux. Understand how to modify read, write, and execute permissions for users.

Kubernetes

Kubernetes Sidecar Pattern

A design pattern where an auxiliary container runs alongside the main application container to provide additional functionality like logging, monitoring, or proxy services.

Kubernetes

Rolling Update

A deployment strategy in Kubernetes that gradually replaces old pods with new ones, ensuring zero-downtime updates and easy rollback

Kubernetes

Kubernetes Pods

Smallest deployable units in Kubernetes that represent a single instance of a running process, typically containing one or more containers that share network and storage resources.

Kubernetes

Pod Lifecycle

Understand the key phases a Kubernetes Pod goes through: Pending, Running, Succeeded, Failed, and Unknown

Kubernetes

Pod Lifecycle Phases

Understand the key phases a Kubernetes pod goes through from creation to termination, including Pending, Running, Succeeded, and Failed states.

Kubernetes

Horizontal Pod Autoscaler

Automatically scales the number of pod replicas based on observed CPU utilization or custom metrics to maintain application performance

JavaScript

Spread Operator Magic

The spread operator (...) allows an iterable to expand into individual elements, useful for array manipulation, function arguments, and object cloning.

JavaScript

Nullish Coalescing

Provides a way to fallback to a default value only when the left-hand side is null or undefined, unlike the || operator which checks for falsy values.

JavaScript

Closure Basics

Understand how closures allow inner functions to access outer function's variables even after the outer function has returned

JavaScript

Array Reduce Magic

Learn how to use .reduce() to transform arrays into a single value by applying a reducer function that accumulates results

JavaScript

Array Destructuring

Easily extract multiple values from arrays into distinct variables in a single line of code, simplifying variable assignment.

Java

Try-Catch Blocks

Exception handling mechanism in Java that allows graceful error management by catching and handling potential runtime exceptions.

Java

Java Synchronized Methods

Demonstrates thread synchronization in Java to prevent race conditions and ensure thread-safe access to shared resources.

Java

Java Stream Map

Transform elements in a stream using the map() method, converting each element to another form without modifying the original collection.

Java

Java Stream Filtering

Learn how to use Stream API to filter collections based on specific conditions efficiently in Java

Java

Java Stream API

Powerful functional programming feature introduced in Java 8 for processing collections with method chaining and lambda expressions.

Java

Java Optional Usage

Explore how to use Java's Optional class to handle potential null values and prevent NullPointerExceptions with more elegant code.

Java

Method Overloading

Method overloading allows multiple methods with the same name but different parameter lists in the same class, enabling more flexible method definitions.

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