Cheatsheet Tooling

Linux sebagai runtime environment untuk Java backend, container, Kubernetes node, CI runner, dan production debugging.

Filesystem and Permissions

Path, file, directory, symlink, permission bit, ownership, mount, temporary directory, disk usage, dan filesystem debugging untuk Java/JAX-RS backend engineer.

Process, Signal, and Runtime Diagnosis

Process ID, parent process, zombie/orphan, foreground/background job, signal, SIGTERM, SIGKILL, exit code, ps/top/kill, systemd awareness, Java process diagnosis, dan runtime debugging checklist.

Environment Variables and Runtime Configuration

Environment variable, export, PATH, JAVA_HOME, MAVEN_OPTS, JVM options, profile, config precedence, local config, CI config, container config, Kubernetes env, secret-in-env risk, and debugging env mismatch for enterprise Java/JAX-RS systems.

Shell Fundamentals

Bash, shell expansion, quoting, single quote, double quote, escape, glob, variable, command substitution, exit status, pipe, redirection, here document, subshell, shell options, and interactive vs non-interactive shell for senior backend engineering workflows.

Bash Scripting Discipline

Script structure, shebang, strict mode, arguments, exit code, error handling, trap, cleanup, logging, dry-run, idempotency, and production-safe Bash automation for senior backend engineering workflows.

Text Processing CLI

cat, less, head, tail, grep, awk, sed, cut, sort, uniq, wc, tr, xargs, find, diff, patch, jq, yq, CSV/JSON/YAML handling, log slicing, and evidence-oriented text processing for backend debugging.

Networking CLI for Backend Debugging

CLI networking untuk HTTP, TLS, DNS, port, routing, dan backend connectivity debugging pada Java/JAX-RS enterprise services.

HTTP/API Debugging with CLI

Reproducible API debugging dengan curl: method, header, body, timeout, TLS, proxy, response, jq parsing, dan evidence capture untuk Java/JAX-RS services.

Log Analysis and Evidence Capture

Analisis log aplikasi, access log, error log, container log, Kubernetes log, correlation ID, trace ID, incident timeline, evidence bundle, dan redaction untuk backend Java/JAX-RS enterprise services.

Linux Performance Basics

CPU, memory, disk, network, load average, top/htop, free, vmstat, iostat, df, du, Java CPU/memory issue, file descriptor issue, container limits, dan performance triage untuk backend Java/JAX-RS services.

Git Foundation

Git sebagai distributed version control system: repository, working tree, staging area, commit, branch, tag, remote, HEAD, index, object database, commit graph, dan snapshot mental model untuk senior backend engineer.

Git Daily Workflow

Workflow Git harian yang aman untuk senior backend engineer: clone, status, add, commit, diff, log, branch, checkout, switch, restore, pull, fetch, push, stash, clean, reset, amend, ignore, dan review checklist.

Git Branching and Commit Hygiene

Branch strategy, feature branch, release branch, hotfix branch, mainline, trunk-based development, Gitflow awareness, commit message, atomic commit, logical commit, squash, fixup, commit signing, dan commit hygiene checklist.

Merge, Rebase, and Conflict Resolution

Merge, fast-forward merge, three-way merge, rebase, interactive rebase, squash merge, rebase conflict, merge conflict, conflict marker, ours/theirs, rerere awareness, conflict resolution workflow, dan avoiding history damage.

Git Recovery and Forensics

Reflog, reset, revert, restore old file, cherry-pick, bisect, blame, lost commit recovery, bad commit diagnosis, regression hunting, revert vs reset, production hotfix recovery, dan Git recovery checklist.

Git Tags and Release Versioning

Lightweight tag, annotated tag, signed tag, release tag, semantic versioning, snapshot version, release version, hotfix tag, build metadata, changelog, tag immutability, release traceability, dan tag review checklist.

GitHub Foundation

GitHub sebagai collaboration platform: repository, organization, team, permission, branch protection, pull request, review, issue, project, milestone, release, action, secret, environment, CODEOWNERS, dan governance surface.

Pull Request Workflow

PR scope, PR description, linked issue, checklist, review request, draft PR, ready for review, required check, conversation resolution, merge strategy, PR size, PR hygiene, dan production-aware review workflow.

Senior-Level PR Review

9 min

Review correctness, domain invariant, API/event compatibility, database migration, security, observability, performance, test, rollback, maintainability, review tone, dan actionable feedback untuk backend Java/JAX-RS enterprise.

GitHub Branch Protection and Governance

9 min

Protected branch, required status check, required review, CODEOWNERS, dismiss stale review, linear history, signed commit, conversation resolution, admin bypass risk, environment protection, deployment approval, repository ruleset, dan governance checklist.

GitHub Actions Foundation

9 min

Workflow, event trigger, job, step, runner, action, matrix, cache, artifact, secret, environment, permission, OIDC federation, reusable workflow, composite action, dan GitHub Actions foundation checklist.

GitHub Actions for Java/Maven Services

7 min

CI workflow Java/Maven: checkout, setup Java, Maven cache, build, unit test, integration test, test report, coverage, static analysis, dependency scan, package, Docker build, image push, deployment trigger, dan workflow optimization.

GitHub Security and Supply Chain

Dependabot, code scanning, secret scanning, dependency review, token permission, workflow permission, OIDC, third-party action pinning, artifact integrity, SBOM, dan vulnerability triage untuk Java/JAX-RS enterprise systems.

Maven Foundation

Maven mental model: POM, coordinates, packaging, lifecycle, phase, goal, plugin, dependency, local repository, remote repository, dan foundation checklist untuk Java/JAX-RS enterprise services.

Maven Lifecycle and Build Phases

Validate, compile, test, package, verify, install, deploy, clean, site, plugin binding, goal execution, build order, skipping tests risk, dan lifecycle review checklist untuk Java/JAX-RS enterprise services.

Maven Dependencies

Dependency scope, compile/provided/runtime/test/system, optional dependency, transitive dependency, mediation, nearest definition, exclusion, dependency tree, convergence, dan dependency review checklist untuk Java/JAX-RS enterprise services.

Maven Dependency Management and BOM

dependencyManagement, pluginManagement, parent POM, BOM, import scope, version alignment, managed dependency, direct dependency, transitive drift, platform BOM, Jakarta/Jersey alignment, dan dependency management checklist untuk Java/JAX-RS enterprise services.

Maven Multi-Module and Reactor

Multi-module project, parent module, child module, aggregator POM, reactor, build order, module dependency, partial build, resume build, -pl, -am, -amd, module boundary, dan multi-module review checklist untuk Java/JAX-RS enterprise services.

Maven Plugins

Compiler, surefire, failsafe, jar, war, shade, dependency, enforcer, versions, jacoco, checkstyle/spotless, image plugin, plugin version pinning, dan plugin review checklist untuk Java/JAX-RS enterprise services.

Maven Profiles and Environment Build

Profile activation, property, environment-specific build, test profile, integration test profile, release profile, native/container profile, profile misuse, hidden build difference, dan CI/local mismatch untuk Java/JAX-RS enterprise services.

Maven Testing Strategy

Unit test, integration test, Surefire, Failsafe, test naming convention, test skipping, test filtering, parallel test, flaky test, Testcontainers, coverage, mutation testing awareness, dan test report untuk Java/JAX-RS enterprise services.

Maven Release and Artifact Publishing

Snapshot version, release version, Maven deploy, artifact repository, Nexus/Artifactory/GitHub Packages awareness, release plugin awareness, version bump, tagging, changelog, reproducible release, rollback release, artifact promotion, dan release review untuk Java/JAX-RS enterprise services.

Maven Security and Dependency Hygiene

24 min

Vulnerability scanning, SCA, SBOM, license scanning, dependency pinning, exclusion risk, shading risk, duplicate classes, dependency convergence, CVE triage, Jakarta namespace conflict, dan Maven security checklist untuk Java/JAX-RS enterprise services.

Build Reproducibility and Determinism

22 min

Reproducible build, locked versions, plugin versions, dependency versions, build timestamp, generated source, OS/locale/network dependency, local cache dependency, artifact hash, dan reproducibility review untuk Java/JAX-RS enterprise services.

Local Development Workflow

Repository setup, Java/Maven setup, environment config, local database, message broker, Redis, Docker Compose, seed data, debug mode, IDE integration, test selection, local scripts, onboarding checklist, dan local workflow review untuk Java/JAX-RS enterprise services.

Automation Scripts and Task Runners

11 min

Bash script, Makefile, Taskfile awareness, npm script awareness, Maven wrapper, idempotent script, dry-run, safety prompt, CI/local reuse, script documentation, dan automation review checklist untuk Java/JAX-RS enterprise services.

Maven Wrapper and Tool Version Management

Maven wrapper, Java version, SDKMAN, jEnv, asdf, .java-version, .mvn, toolchain plugin, compiler release flag, build JDK vs runtime JDK, version mismatch, dan tool version checklist untuk Java/JAX-RS enterprise services.

Repository Structure and Codebase Navigation

13 min

Monorepo, polyrepo, multi-module repo, service repo, library repo, shared module, generated code, config/script/CI/docs directory, ownership map, dan codebase navigation checklist untuk Java/JAX-RS enterprise systems.

Debugging Build Failures

Compilation failure, test failure, dependency resolution failure, plugin failure, Surefire/Failsafe failure, Java/Maven mismatch, missing repository credential, corrupted local repository, snapshot issue, CI-only failure, local-only failure, dan build failure checklist untuk Java/JAX-RS enterprise systems.

Debugging Runtime Issues with Tooling

Java process issue, port conflict, env/config/secret mismatch, DNS, TLS, HTTP, database, Kafka, RabbitMQ, Redis, container, Kubernetes issue, reproducible command, dan runtime debugging checklist untuk Java/JAX-RS enterprise systems.

CLI Workflow for Docker and Kubernetes

Docker dan kubectl workflow untuk build, run, exec, logs, inspect, compose, get, describe, logs, exec, port-forward, rollout, top, events, debug, dan CLI safety.

CLI Workflow for Cloud Debugging

13 min

AWS CLI, Azure CLI, authentication, profile, subscription/account, region, resource lookup, logs, metrics, secrets, registry, IAM/RBAC, network, private endpoint, dan cloud CLI safety.

CI/CD Pipeline Mental Model

22 min

Source, build, test, scan, package, publish, deploy, smoke test, promote, rollback, artifact traceability, environment gate, approval, secret, dan permission.

Release Engineering

Release branch, release tag, versioning, changelog, release note, artifact, image, deployment manifest, promotion, feature flag, rollback, roll-forward, hotfix, release checklist, dan release review checklist.

Incident Support Tooling

Evidence capture, timeline, logs, metrics, traces, Git commit, release tag, deployment event, config change, database migration, feature flag change, rollback command, RCA support, post-incident artifact, dan incident tooling checklist.

Secure Tooling Practices

Secret di shell history, logs, env, Git; token permission, SSH/GPG key, commit signing, credential helper, CI secret, least privilege, clipboard risk, dan local machine hygiene.

Developer Productivity and Personal Workflow

Alias, shell profile, prompt, history search, fuzzy finder, ripgrep, fd, jq/yq workflow, tmux, IDE terminal, notes, snippets, personal runbook, dan reusable commands.

Documentation as Tooling

README, CONTRIBUTING, architecture notes, ADR, runbook, troubleshooting guide, local setup guide, release guide, PR template, issue template, script help, command examples, dan decision log.

Internal Library and Shared Tooling Governance

Internal library, shared Maven module, shared script, shared GitHub workflow, shared Docker base image, shared Helm chart, versioning, ownership, compatibility, deprecation, migration, dan governance.

Advanced Git Workflows

13 min

Worktree, sparse checkout, submodule, subtree, partial clone, LFS, patch file, format-patch, apply, bisect automation, blame ignore revs, monorepo workflow, large repo performance, dan advanced Git checklist.

Advanced Maven Topics

Custom plugin, annotation processing, generated sources, toolchains, build extension, shade relocation, multi-release jar, JPMS/module-info awareness, reproducible jar, dependency lock alternatives, Maven daemon awareness, remote cache awareness, dan advanced Maven review checklist.

Cross-Platform Tooling

Linux, macOS, Windows, WSL, path difference, line ending, shell difference, PowerShell awareness, file permission difference, Docker on Windows, case-sensitive filesystem, CI runner OS, dan cross-platform script checklist.

Troubleshooting Playbook

Playbook production-safe untuk local setup failure, Maven build failure, test failure, CI-only failure, dependency resolution, branch divergence, merge conflict, stuck PR check, Docker/Kubernetes/cloud CLI failure, secret leak, dan wrong release tag.

PR Review and Architecture Decision Checklist

Checklist review untuk Bash script, Linux command, Git workflow, GitHub workflow, Maven POM, dependency, build reproducibility, CI/CD, release, security, local workflow, operational tooling, documentation, dan ADR.

30/60/90-Day Tooling Onboarding Plan

Rencana onboarding tooling untuk senior backend engineer: local setup, repo navigation, build/test, Git workflow, CI/CD, Maven dependency, GitHub PR governance, debugging scripts, automation improvement, runbook, dan release safety.

Engineering Tooling Mastery Map for Senior Backend Engineer