2026-05-11 09:58:01 INFO  inventory-api[2214] --- [main] com.example.InventoryApplication : Starting InventoryApplication v2.8.4
2026-05-11 09:58:07 INFO  inventory-api[2214] --- [main] com.example.InventoryApplication : Started InventoryApplication in 6.2 seconds
2026-05-11 10:02:14 WARN  inventory-api[2214] --- [order-worker-2] com.example.retry.PaymentClient : upstream timeout, retrying payment authorization attempt=2
2026-05-11 10:05:31 ERROR inventory-api[2214] --- [http-nio-8080-exec-7] com.example.orders.OrderController : request failed while loading order id=4812
java.lang.NullPointerException: Cannot invoke "Customer.getStatus()" because "customer" is null
        at com.example.orders.OrderService.validateCustomer(OrderService.java:144)
        at com.example.orders.OrderService.submit(OrderService.java:92)
        at com.example.orders.OrderController.create(OrderController.java:61)
Caused by: java.lang.IllegalStateException: customer lookup returned empty result
        at com.example.customers.CustomerRepository.findRequired(CustomerRepository.java:38)
        ... 3 more
2026-05-11 10:08:42 WARN  inventory-api[2214] --- [http-nio-8080-exec-2] com.example.integration.ShippingClient : java.net.SocketTimeoutException: Read timed out calling shipping endpoint
2026-05-11 10:09:13 ERROR inventory-api[2214] --- [pool-4-thread-1] com.example.integration.TaxClient : java.net.ConnectException: connection refused connecting to tax-service:8443
2026-05-11 10:12:55 ERROR inventory-api[2214] --- [HikariPool-1 housekeeper] com.zaxxer.hikari.pool.HikariPool : connection pool exhausted waiting for database connection
2026-05-11 10:13:02 ERROR inventory-api[2214] --- [http-nio-8080-exec-4] com.example.db.InventoryRepository : database unavailable during checkout commit
java.sql.SQLRecoverableException: IO Error: The Network Adapter could not establish the connection
        at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:743)
        at oracle.jdbc.driver.PhysicalConnection.connect(PhysicalConnection.java:666)
Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
        at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:836)
        ... 2 more
2026-05-11 10:16:40 ERROR inventory-api[2214] --- [cert-refresh] com.example.security.TrustStoreLoader : javax.net.ssl.SSLHandshakeException: PKIX path validation failed
Caused by: java.security.cert.CertificateExpiredException: NotAfter: Mon May 11 10:00:00 UTC 2026
        at sun.security.provider.certpath.BasicChecker.verifyTimestamp(BasicChecker.java:194)
2026-05-11 10:18:01 ERROR inventory-api[2214] --- [http-nio-8080-exec-8] com.example.web.ErrorHandler : HTTP 500 POST /api/orders requestId=req-1001
2026-05-11 10:18:03 ERROR inventory-api[2214] --- [http-nio-8080-exec-9] com.example.web.ErrorHandler : HTTP 503 GET /api/inventory requestId=req-1002
2026-05-11 10:18:06 ERROR inventory-api[2214] --- [http-nio-8080-exec-3] com.example.web.ErrorHandler : HTTP 503 GET /api/inventory requestId=req-1003
2026-05-11 10:21:27 FATAL inventory-api[2214] --- [main] org.apache.catalina.core.StandardService : JVM failure detected, stopping service
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
        at java.base/java.util.Arrays.copyOf(Arrays.java:3537)
        at java.base/java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:228)
        at com.example.cache.ReportCache.loadAll(ReportCache.java:87)