Success Story: Resolving a Persistent Mainframe Performance Issue

As a Technical Consultant at CPT Global, I've encountered a wide range of challenges faced by our clients. One particularly complex case involved a persistent performance issue on a client's mainframe system. 

We identified a significant slowdown in the client's mainframe performance, especially during peak times, before the client was aware of it. Initially, we suspected competitor data scraping was the cause. However, further investigation revealed it was coming from one of the client’s contracted companies, highlighting a lack of oversight that made the situation even more complex. 

Unraveling the Mystery 

The problem was challenging because the external requests, though regular, were difficult to trace. They utilized multiple hosting services, complicating efforts to identify their true origin and understand their purpose. This complexity required keen attention to detail.  

Through careful analysis, we identified the connections that were scraping from the site. We then identified the affected internal teams and those responsible, after which we collaborated with them to review all their connections, enabling CPT to address the problem more effectively. 

Developing a Solution 

Based on our findings, we recommended a multi-faceted approach to address the issue: 

1. API Throttling: Restrict the number of requests allowed per IP address or time period to prevent excessive load.
2. IP Address Blocking: Block known malicious IP addresses to reduce the volume of incoming requests.
3. Authentication: Require authentication (e.g., OAuth) for API calls to verify the identity of the requester.
4. CAPTCHA: Implement CAPTCHA to differentiate human and bot traffic.
5. Data Extraction: Provide the external entity with a more efficient way to obtain the required data (e.g., monthly data extracts).

Overcoming Challenges 

Implementing these solutions required close collaboration with the client's internal teams and external stakeholders. The process was complex, as it involved navigating various organizational structures and ensuring alignment with diverse business objectives. Communication was key, and we actively engaged with team members and stakeholders through meetings and workshops to understand their needs and expectations. 

We faced challenges in gaining consensus on the best approach and coordinating efforts across different departments. Each department had unique priorities, which sometimes led to conflicting views. However, through persistent advocacy and technical expertise, we were able to drive the necessary changes. Our commitment to open dialogue and problem-solving enabled us to overcome obstacles, ultimately leading to successful implementation and improved outcomes. 

Delivering Results 

The client successfully resolved the issue by implementing the recommended strategies, including renegotiating the data sharing method with the contracted company after discovering the high costs of the current approach. This led to significant improvements in system performance, reduced costs, and enhanced security. 

The case highlighted the importance of proactive monitoring, effective communication, and a collaborative approach to addressing complex IT challenges. 

Reflections and Takeaways 

Through this experience, I’m reminded of some invaluable lessons that can apply to any organization: 

• Prioritize Proactive Monitoring: Regular system performance checks are critical to catching potential issues before they escalate. 

• Enhance API Security: Strengthening security protocols around APIs is non-negotiable for safeguarding valuable data and maintaining operational efficiency. 

• Foster Vendor Partnerships: Collaborating with vendors can unlock new pathways to resolving difficult challenges. 

• Commit to Continuous Improvement: It’s vital to routinely reassess and bolster security measures to outpace emerging threats. 

Embracing these principles not only prepares organizations to face challenges head-on but also ensures that their mainframe systems operate at peak performance. CPT Global is committed to delivering value and working closely with our clients to achieve their goals. This success story is just one example of our commitment and expertise in resolving even the most complex mainframe issues. If you need help with your mainframe system, get in touch!