Weekly Report - November 18, 2024

1. Fixing the Exception Issue in Nested Transaction Mechanism During Concurrent Contract Execution

We conducted a code review and identified race conditions in the nested transaction handling. A locking mechanism was introduced to ensure that concurrent requests are correctly serialized during the execution of nested transactions. After multiple rounds of testing, we confirmed that the repaired mechanism operates stably under high-concurrency scenarios.

2. Fixing the Inability to Recognize Data Conflict Relationships Between Contract Transactions in Certain Scenarios

We analyzed the logic for identifying data conflicts and discovered that some conditional checks were missing. The data conflict detection algorithm was enhanced to ensure that potential conflicts can be accurately identified before transaction execution. We performed multi-scenario testing to validate the effectiveness of the fix, ensuring that the system can correctly recognize data conflicts in various situations.

3. Implementing Contract Transaction Execution According to DAG Order During Block Synchronization

We designed and implemented a DAG-based transaction scheduling algorithm to ensure that contract transactions are executed correctly according to their dependencies. The execution process for block synchronization was optimized to reduce unnecessary delays.