Previous incidents

APIs - Estimated Delivery Date recovered.

Root Cause Analysis

On 4 May 2026, customers were unable to access dashboard.clickpost.in from 4:32 PM to 5:00 PM because its backend server was down. The service was failing under stack overflows and elevated latency on every incoming request, making the dashboard effectively unusable until the change was reverted.

The trigger was a change made the same day as part of productionizing eBPF-based GC tracing metrics for Python. To correlate GC pressure with API latency on a per-host basis, we...

Returns and Exchanges - Customer Portal recovered.

Tracking Page - personalised 1 recovered.

Tracking Page - personalised 2 recovered.

Root Cause Analysis - Tracking Page Downtime

The tracking page went down because the backend application serving the tracking pages’ had a scheduled maintenance where it’s security group was updated.

During this update, port 80 [HTTP] was removed as part of our internal effort to move all requests on HTTPS only.

One of the tracking page APIs was dependent on port 80 to serve the frontend - tracking pages. As a result, incoming requests were silently blocked. Since internal systems remained...

APIs - Estimated Delivery Date recovered.

APIs - Estimated Delivery Date recovered.

The reporting issue has been resolved.

APIs - Serviceability - AWS recovered.

Tracking Page - personalised 1 recovered.

Tracking Page - personalised 5 recovered.

Tracking Page - personalised 1 recovered.

Returns and Exchanges - Customer Portal recovered.

Tracking Page - personalised 1 recovered.

Tracking Page - personalised 1 recovered.

Tracking Page - personalised 4 recovered.

Tracking Page - personalised 1 recovered.

Dashboard - B2C recovered.

APIs - Estimated Delivery Date recovered.

API - Recommendation & Order Creation recovered.

Tracking Page - personalised 1 recovered.

Tracking Page - personalised 1 recovered.

Impacted Time Window: 23rd March 2026, 10:40 AM IST to 11:35 AM IST

ClickPost manifestation service encountered an issue in the primary storage layer during data persistence, which caused failures in the API. ClickPost system uses a relational database as the primary transactional storage system. The issue was traced to a table's primary key column running out of range. By default the integer column type is used in the legacy core tables for the primary key column which can accommodate IDs t...

Dashboard - B2C [Backend] and Returns [Backend] recovered.

Tracking Page - personalised 5 recovered.

Root Cause Analysis (RCA): Application OOM Due to OpenTelemetry Java SDK Issue

Summary:
Our application instances experienced Out Of Memory (OOM) events that resulted in service instability instance restarts. The issue was traced to a known memory leak in the OpenTelemetry Java instrumentation described in OpenTelemetry Java Issue #8143.

The bug caused unbounded memory growth in the OpenTelemetry SDK during context propagation, eventually exhausting JVM heap memory under sustained traffic w...

Returns and Exchanges - Admin Portal recovered.

Dashboard - B2C recovered.

Tracking Page - personalised 5 recovered.

API - Recommendation & Order Creation recovered.

Estimated Delivery Date recovered.

Estimated Delivery Date recovered.

Tracking Page - personalised 1 and Tracking Page - personalised 2 recovered.

Dashboard - B2C [Backend] and Returns [Backend] recovered.

The issue has been resolved.

APIs - Order creation / AWB Registration recovered.