RFC - Optimizing Callback Handling, Semantics, and Fee Models Using Priority and Delay Queues for Improved Resource Utilization, User Satisfaction, and System Performance in a Flexible Dapp Development Environment, Allowing Developers to Optimize Cost Versus Performance Based on Specific Application Needs

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How the existing fees model—comprising Block Reservation Fees and Future Reservation Fees—can be refined through the use of priority and delay queue data structures, and how the Priority and ExecuteAt attributes of callbacks can be utilized to optimize callback handling based on their context and urgency.

Refining Fees with Priority and Delay Queues

Dynamic Fee Adjustment Based on Queue State:

Queue Length: If the priority queue for a particular block is already nearing its limit, the fees for adding another callback to the same block can increase dynamically. Conversely, if the delay queue has ample space, adding a callback with a future ExecuteAt time can be cheaper, encouraging users to schedule non-urgent tasks for later times.

Priority Consideration: Callbacks with higher priority (lower numerical value) could be charged a premium, reflecting their need for quicker processing. This could be particularly useful for high-stakes applications like trading platforms, where timing can significantly impact outcomes.

Enhanced Callback Semantics

Using the Priority and ExecuteAt parameters effectively can allow differentiating callback handling based on the application’s context:

High-Priority Immediate Execution: For applications like DeFi, where immediate execution can protect or gain significant financial value, callbacks should have high priority and short ExecuteAt intervals. These would incur higher fees but would be processed preferentially.

Low-Priority Deferred Execution: For less time-sensitive applications, such as gaming, callbacks can be set with lower priority and longer ExecuteAt intervals. These callbacks would be cheaper to schedule and could typically run when the system is less busy, thus conserving resources during peak times.

By refining the fees model and enhancing the semantics of callback scheduling, callback module can achieve more efficient resource utilization, better user satisfaction, and higher overall system performance. This approach also kindly allows for a more flexible Dapp development environment, where developers can optimize cost versus performance based on the specific needs of their applications.

Fee Calculation Algorithms

Block reservation fee = base fee * ( 1 + number of scheduledcallbacks/max block fee)

Future reservation fee = base fee * ( distance to execution block/max future limit)

Priority fee = maximum priority fee * ( 1 - priority level/highest priority level)

https://docs.google.com/document/d/1euYohDcEdjk-dafL1cEd7YRtLDJ8Yz2t4UVKrGoMPz0/edit?usp=sharing

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Earlier Discussion

https://github.com/orgs/archway-network/discussions/25#discussioncomment-7253864

https://github.com/orgs/archway-network/discussions/25#discussioncomment-7254394

Epoch based Architecture, 📊 Different Callback Frequencies for Varied DApp Needs:

Transaction-Specific Epochs ⏱: Tailor callback execution timing based on the nature of DApps. For example, immediate callbacks for DeFi trades 💹 and relaxed timings for gaming DApps 🎮.

Data-Cleaning Epochs 🧼 : Regular intervals for cleaning up processed CallbackDepositRecord to maintain efficiency.

Security Monitoring Epochs 🛡: Dedicated epochs for monitoring and protecting against malicious callback activities or vulnerabilities.

archway-network/archway#479 (comment)

https://gov.archway.io/t/proposal-network-upgrade-v7/573/8

🌌🕒 Brief discussion on - Space and Time Complexity 🔄📊 of Callback Module 📲🔄 AlgorithmComplexityAnalysis - Google Docs https://docs.google.com/document/d/1ct_tsp08zp33XLveyLYWWTM_mTtMdOCgY4butjdeBF8/edit, Kindly submitting detailed document shortly!! 🧡💜🎮🎮🌹🌹🎁🎁🌹🌹

Full code documentation of updated Callback Module proposal.
https://docs.google.com/document/d/1uC8YeLh09vO94ba7rBKISZddOz1LbDGFFallBEJnRKI/edit?usp=sharing
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