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51 Cheat Sheets

Developer & testing cheat sheets

Quick reference guides for performance testing tools, DevOps, scripting, and more. 12 free, 20 with free signup, 19 premium.

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Performance & Testing

JMeter

Apache JMeter commands, functions, shortcuts, and CLI options

Free signup
Performance & Testing

Gatling

Gatling DSL syntax, simulations, feeders, and assertions

Free signup
Performance & Testing

k6

k6 scripting, metrics, thresholds, and scenarios

Premium
Performance & Testing

LoadRunner

VuGen scripting, correlation, and Controller settings

Free signup
Performance & Testing

Locust

Python-based load testing with distributed execution

Free signup
Performance & Testing

Artillery

Node.js load testing with YAML scenarios

Premium
Performance & Testing

wrk

HTTP benchmarking with Lua scripting

Performance & Testing

Apache Bench

Quick HTTP server benchmarking (ab)

Premium
Performance & Testing

Vegeta

Go-based HTTP load testing tool

Performance & Testing

Performance Testing

Core concepts, test types, and best practices

Free signup
Observability

Grafana

Dashboard creation, panels, and alerting

Free signup
Observability

Prometheus

PromQL queries, metrics, and alerting rules

Premium
Observability

InfluxDB

Time series database queries and retention

Free signup
Observability

ELK Stack

Elasticsearch, Logstash, and Kibana essentials

DevOps & Cloud

Docker

Container commands, Dockerfile, and compose

DevOps & Cloud

Kubernetes

kubectl commands, pods, deployments, and services

Free signup
DevOps & Cloud

AWS CLI

Common AWS commands for EC2, S3, and more

Free signup
DevOps & Cloud

Terraform

HCL syntax, commands, and state management

DevOps & Cloud

Git

Version control commands and workflows

Languages & Scripting

Bash

Shell scripting, variables, and control flow

Languages & Scripting

Linux

Essential commands for system administration

Languages & Scripting

Python

Python syntax, data structures, and common patterns

Free signup
Languages & Scripting

jq

JSON processing and transformation

Languages & Scripting

cURL

HTTP requests, headers, and authentication

Languages & Scripting

Regex

Regular expression patterns and syntax

Free signup
Languages & Scripting

sed & awk

Text processing and transformation

API & Database

Postman

API testing, collections, and environments

API & Database

SQL

Query syntax, joins, and aggregations

Free signup
API & Database

Redis

Commands for keys, strings, hashes, and more

Free signup
API & Database

MongoDB

Document database queries and aggregation

Free signup
API & Database

PostgreSQL

Advanced RDBMS features and queries

Premium
API & Database

GraphQL

API query language and schema design

Premium
API & Database

OpenAPI

OpenAPI/Swagger specification reference

Premium
API & Database

gRPC

High-performance RPC framework

Free signup
Performance & Testing

Playwright

E2E testing with Microsoft Playwright

Free signup
Performance & Testing

Cypress

JavaScript end-to-end testing framework

Premium
Observability

OpenTelemetry

Unified observability standard

Premium
Observability

Jaeger

Distributed tracing and monitoring

Premium
Observability

Datadog

Cloud monitoring and APM platform

Free signup
DevOps & Cloud

GitHub Actions

CI/CD workflows and automation

Premium
DevOps & Cloud

Helm

Kubernetes package manager

Premium
DevOps & Cloud

ArgoCD

GitOps continuous delivery for K8s

Premium
DevOps & Cloud

Ansible

IT automation and configuration management

Premium
DevOps & Cloud

Vault

HashiCorp secrets management

Premium
DevOps & Cloud

Azure CLI

Microsoft Azure command-line interface

Premium
DevOps & Cloud

Google Cloud CLI

gcloud commands for GCP

Free signup
Languages & Scripting

TypeScript

Typed JavaScript superset

Premium
Languages & Scripting

Go

Go programming language essentials

Free signup
Languages & Scripting

Node.js

Node.js runtime and npm commands

Premium
Security

Trivy

Container vulnerability scanner

Premium
Security

OWASP ZAP

Web application security testing

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