System design URL shortener: Spring Boot 4.1.1, base62 ids, Redis cache-aside, Redis Lua token bucket, 24 tests and live transcripts

2026-10-22 08:13:35 +00:00
commit aa61ed8786
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+#!/usr/bin/env bash
+# Starts the app on :8080 against PostgreSQL (localhost:5433, db urlshort) and Redis (localhost:6379).
+# -Duser.timezone=UTC matters: the PostgreSQL JDBC driver sends the JVM's zone to the server, and a legacy
+# zone name such as Asia/Calcutta can be rejected ("invalid value for parameter TimeZone").
+set -euo pipefail
+cd "$(dirname "$0")/.."
+mvn -q -DskipTests package
+exec java -Duser.timezone=UTC -jar target/system-design-url-shortener-1.0.0.jar "$@"