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Add complete simulation engine that compares old (24h cache-based) vs new (1h route-based) reward calculation methodologies with full integration into epoch operations. Core Simulation Engine: - Add SimulationCoordinator with configurable time windows and comparison settings - Implement dual calculation methods with proper Performance type conversions - Add comprehensive error handling with DatabaseError variant in RewardingError - Store simulation results in database with proper relationship constraints Old Method Implementation (24h Cache-Based): - Wrap existing reliability calculation using get_all_avg_mix_reliability_in_last_24hr() - Convert reliability percentages to Performance types using from_percentage_value() - Maintain exact same logic as production for accurate baseline comparison - Generate simulation data structures with proper metadata New Method Implementation (1h Route-Based): - Leverage calculate_corrected_node_reliabilities_for_interval() for route analysis - Support configurable time windows (default 1 hour vs 24 hours) - Provide detailed route statistics including success rates and failure analysis - Convert route reliability data to Performance types with naive_try_from_f64() Epoch Operations Integration: - Extend EpochAdvancer struct with optional SimulationConfig field - Update constructor and start method to accept simulation configuration - Add simulation trigger in perform_epoch_operations() before real rewarding - Ensure simulation failures don't break epoch advancement process CLI Integration: - Update run.rs to handle both --enable-rewarding and --simulate-rewarding modes - Create SimulationConfig from rewarding.debug configuration settings - Implement mutual exclusivity between real rewarding and simulation mode - Skip permission checks for simulation-only mode (no blockchain transactions) The simulation system runs in parallel with epoch operations, storing comparative data for analysis without affecting production reward distribution.
Nym API
The Nym API provides multiple services to the Nym network, and is designed to be run alongside Nyxd validators. From a logical perspective, there are multiple applications, but they are bundled together for ease of deployment.
License
Copyright (C) 2023 Nym Technologies SA contact@nymtech.net
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.
Nym Directory Caching
The Nym directory is contained in the mixnet smart contract in the Nyx blockchain. The blockchain holds the canonical directory information about nodes, stake, locations etc. The Nym API caches this information periodically to make queries faster and more scalable.
Nym Network Monitoring
The Nym API periodically sends test packets through the entire Nym mixnet to test node liveness and quality of service.
Nym Epoch Advancement and Payment
The Nym API periodically advances the epoch and triggers payment based on network monitoring measurements.
Coconut Credentials
Coconut [paper] is a distributed cryptographic signing scheme providing a high degree of privacy for its users. You can find an overview of how to use it in the Coconut section of the Nym documentation.
A simple explanation is also available in blog form.
This project was partially funded through the NGI0 PET Fund, a fund established by NL.net with financial support from the European Commission's NGI programme, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 825310.