hiero-ledger/hiero-mirror-node
Jul 2025 – Oct 2025
4 Months active
Languages Used
JavaYAMLDraw.ioSQLGherkin
Technical Skills
API DesignBackend DevelopmentSmart ContractsTestingDatabase DesignERD Visualization
ashumahajan
PROFILE
Ashumahajan
Ashu Mahajan contributed to the hiero-ledger/hiero-mirror-node repository by designing and implementing foundational backend features for contract and hook management. Over four months, Ashu developed database schemas and ERD documentation to support hook storage and history, introduced contract nonce verification in acceptance tests, and expanded test coverage for accounts, balances, and NFT allowances. Using Java, SQL, and Hibernate, Ashu created provisioning scripts, repository layers, and technical documentation to improve data integrity and auditability. The work addressed reliability and scalability challenges, enabling robust data ingestion and workflow management while clarifying system architecture for future migrations and analytics within distributed systems.
Overall Statistics
Feature vs Bugs
83%Features
Repository Contributions
7Total
Bugs
1
Commits
7
Features
5
Lines of code
5,336
Activity Months4
Your Network
52 people
Work History
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary focusing on the Hiero Mirror Node work. Delivered foundational data layer support for hook management by implementing database schema changes, domain objects, and enums to enable hook storage, history, and changes. Updated ERD documentation and provided repository layer implementations to manage the new hook data. This work increases auditability, reliability, and scalability of hook-driven workflows across the Hiero Mirror Node.
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary focusing on the Hiero Mirror Node work. Delivered foundational data layer support for hook management by implementing database schema changes, domain objects, and enums to enable hook storage, history, and changes. Updated ERD documentation and provided repository layer implementations to manage the new hook data. This work increases auditability, reliability, and scalability of hook-driven workflows across the Hiero Mirror Node.
October 2025
September 2025
4 Commits • 2 Features
Sep 1, 2025Monthly summary for 2025-09: In hiero-mirror-node, delivered targeted improvements focused on reliability, testability, and future data ingestion. Achievements include expanded acceptance tests for Mirror Node accounts, balances, and NFT allowances; a comprehensive HIP-1195 design for Hiero hooks integration; and a bug fix to harden the address book service against partial files. These efforts reduce production risk, improve API reliability, and establish a foundation for scalable data processing.
September 2025
4 Commits • 2 Features
Sep 1, 2025Monthly summary for 2025-09: In hiero-mirror-node, delivered targeted improvements focused on reliability, testability, and future data ingestion. Achievements include expanded acceptance tests for Mirror Node accounts, balances, and NFT allowances; a comprehensive HIP-1195 design for Hiero hooks integration; and a bug fix to harden the address book service against partial files. These efforts reduce production risk, improve API reliability, and establish a foundation for scalable data processing.
August 2025
1 Commits • 1 Features
Aug 1, 2025August 2025: Delivered Mirror-node Database ERD and setup artifacts for hiero-ledger/hiero-mirror-node. Implemented a formal database model (ERD) and provisioning artifacts, including an SQL script to truncate data, remove partitions, and add foreign keys; a Draw.io visualization; and IntelliJ IDEA-based instructions to generate the ERD. All changes captured in commit 6f8d8038847a02dcd4ff2f19e4eb8e072292628f titled 'Added Entity Relationship Diagram (#11690)'.
1 Commits • 1 Features
Aug 1, 2025August 2025: Delivered Mirror-node Database ERD and setup artifacts for hiero-ledger/hiero-mirror-node. Implemented a formal database model (ERD) and provisioning artifacts, including an SQL script to truncate data, remove partitions, and add foreign keys; a Draw.io visualization; and IntelliJ IDEA-based instructions to generate the ERD. All changes captured in commit 6f8d8038847a02dcd4ff2f19e4eb8e072292628f titled 'Added Entity Relationship Diagram (#11690)'.
August 2025
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025: Delivered contract nonce verification in acceptance tests for hiero-ledger/hiero-mirror-node, updated the OpenAPI spec to include a nonce property for contracts, and enhanced test classes to track and assert nonce values for parent and child contracts. This work strengthens end-to-end validation of contract sequencing and improves API clarity and test reliability.
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025: Delivered contract nonce verification in acceptance tests for hiero-ledger/hiero-mirror-node, updated the OpenAPI spec to include a nonce property for contracts, and enhanced test classes to track and assert nonce values for parent and child contracts. This work strengthens end-to-end validation of contract sequencing and improves API clarity and test reliability.
Activity
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Quality Metrics
Correctness95.8%
Maintainability94.2%
Architecture91.4%
Performance88.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
Draw.ioGherkinJavaSQLYAML
Technical Skills
API DesignAPI TestingBackend DevelopmentCucumberDatabase DesignDistributed SystemsERD VisualizationError HandlingHibernateJPAJavaJava DevelopmentSQLSmart ContractsSystem Design
Repositories Contributed To
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