---
title: "database"
lang: "en"
author: "Mohammad Abu Mattar"
canonical: https://mkabumattar.com/categories/database
---

[All Categories](/codesnippets/categories)

# Database

[Home](/)›[All Snippets](/codesnippets)›[All Categories](/codesnippets/categories)›[Database](/codesnippets/categories/database)

Category

# Database

LanguageAllBash (7)Python (5)Typescript (3)Bash and Python (1)Python, Node.js and Go (1)SQL and Python (1)CategoryAllDevops (9)Shell scripting (6)Aws (5)Automation (3)Productivity (3)Python (3)Backend (2)Database (2)Nodejs (2)Performance (2)Ai ml (1)Async (1)Bash (1)Cloud (1)Computer vision (1)Document processing (1)Linux (1)Networking (1)Security (1)Typescript (1)TagAllDevOps (7)Bash (6)Python (6)Shell Scripting (5)Automation (4)AWS (4)NodeJS (4)Performance (4)Configuration (3)TypeScript (3)Backend (2)Boto3 (2)CI/CD (2)Cloud (2)Concurrency (2)DevTools (2)Environment Variables (2)IAM (2)Linux (2)Microservices (2)POSIX (2)Productivity (2)S3 (2)Terminal (2)AI Models (1)Aiohttp (1)Asyncio (1)AWS SDK v3 (1)BestPractices (1)BigData (1)Caching (1)CloudSecurity (1)Computer Vision (1)Cron (1)CRUD (1)Database (1)DataScience (1)Document Processing (1)DocumentClient (1)Dotenv (1)DynamoDB (1)EC2 (1)Echo (1)Exponential Backoff (1)Flock (1)Go (1)HTTP (1)Indexes (1)Infrastructure (1)Locking (1)Machine Learning (1)MemoryOptimization (1)MLOps (1)MultiEnvironment (1)OCR (1)Open Source (1)Optimization (1)Pid file (1)PostgreSQL (1)Printf (1)QueryOptimization (1)Redis (1)Retry (1)Scripting (1)Scripting Best Practices (1)SecretsManagement (1)SecretsManager (1)Security (1)Shell (1)SQL (1)Text Recognition (1)Validation (1)Vault (1)Zod (1)Zsh (1)SortNewest firstOldest firstA to ZShortest read first

[![AWS DynamoDB CRUD Operations in Node.js with the AWS SDK v3](/_astro/hero.CceR-orf_Z2scRI0.webp)](/codesnippets/post/nodejs-dynamodb-crud-aws-sdk-v3)

## [AWS DynamoDB CRUD Operations in Node.js with the AWS SDK v3](/codesnippets/post/nodejs-dynamodb-crud-aws-sdk-v3)

-   [Nodejs](/codesnippets/categories/nodejs)
-   [Aws](/codesnippets/categories/aws)
-   05 Aug 2026
-   07 Mins read

Quick Tip Wrap the low-level DynamoDB client in a DynamoDBDocumentClient so you pass plain JavaScript objects in and get plain objects back, then guard your writes with ConditionExpression an

[#DynamoDB](/codesnippets/tags/dynamodb)[#Node.js](/codesnippets/tags/nodejs)[#AWS SDK v3](/codesnippets/tags/aws-sdk-v3)+3 tags

[Typescript](/codesnippets/typescript)

[View Code](/codesnippets/post/nodejs-dynamodb-crud-aws-sdk-v3)

[![PostgreSQL Query Optimization: Indexes, EXPLAIN ANALYZE & Execution Plans](/_astro/hero.WD7Zwlat_2dqoYO.webp)](/codesnippets/post/postgresql-query-optimization-indexes-explain)

## [PostgreSQL Query Optimization: Indexes, EXPLAIN ANALYZE & Execution Plans](/codesnippets/post/postgresql-query-optimization-indexes-explain)

-   [Database](/codesnippets/categories/database)
-   [Performance](/codesnippets/categories/performance)
-   29 Mar 2026
-   05 Mins read

Need to optimize slow PostgreSQL queries? Use EXPLAIN ANALYZE and targeted indexing. Slow database queries kill application performance. Most developers don't know where the actual bottleneck is,

[#PostgreSQL](/codesnippets/tags/postgresql)[#QueryOptimization](/codesnippets/tags/queryoptimization)[#Indexes](/codesnippets/tags/indexes)+4 tags

[SQL and Python](/codesnippets/sql-and-python)

[View Code](/codesnippets/post/postgresql-query-optimization-indexes-explain)