Move to concurrent hash map

[zodvik]

Summary by CodeRabbit

• Refactor
  • Improved performance and thread-safety by updating the data structure from HashMap to ConcurrentHashMap in the search functionality.

[coderabbitai]

Actionable comments posted: 0

Review Details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between 3d009b6 and 6eba95a.

Files selected for processing (1)

• src/main/java/dev/midplane/fuzzysearch/fuzzysearchers/InvertedIndex.java (1 hunks)

Additional comments not posted (2)

src/main/java/dev/midplane/fuzzysearch/fuzzysearchers/InvertedIndex.java (2)

5-5: The import of ConcurrentHashMap is correctly added to support the new thread-safe data structure.

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11-11: The replacement of HashMap with ConcurrentHashMap in the constructor aligns with the PR's objective to enhance thread safety.

Verification successful

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The replacement of HashMap with ConcurrentHashMap in the constructor aligns with the PR's objective to enhance thread safety. The operations on ngramToTermIds (get, put, and size) are thread-safe.

• ngramToTermIds.get(ngram)
• ngramToTermIds.put(ngram, termIds)
• ngramToTermIds.size()

Scripts Executed

The following scripts were executed for the analysis:

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Script:

#!/bin/bash
# Description: Verify that all operations on `ngramToTermIds` are thread-safe.

# Test: Search for all usages of `ngramToTermIds` to ensure thread-safe operations.
rg --type java $'ngramToTermIds' src/main/java/dev/midplane/fuzzysearch/fuzzysearchers/InvertedIndex.java

Length of output: 397

[zodvik]

@coderabbitai is that a good change?

[coderabbitai]

@zodvik, replacing HashMap with ConcurrentHashMap in the InvertedIndex class is generally a good change, especially if your application involves multiple threads that might access the InvertedIndex concurrently.

ConcurrentHashMap is designed to handle concurrent access to the map, providing thread safety without the need for explicit synchronization. This can lead to better scalability and performance in a multi-threaded environment compared to HashMap, which is not thread-safe and could cause inconsistent behavior if accessed simultaneously by multiple threads.

If your use case involves frequent reads and writes to the index from multiple threads, this change will likely improve the robustness and performance of your application. However, if the InvertedIndex is only accessed from a single thread, this change might introduce unnecessary overhead. It's important to consider the specific needs and context of your application when deciding on such changes.

[coderabbitai]

Actionable comments posted: 0

Review Details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between 6eba95a and a522a59.

Files selected for processing (1)

• src/main/java/dev/midplane/fuzzysearch/fuzzysearchers/InvertedIndex.java (1 hunks)

Files skipped from review as they are similar to previous changes (1)

• src/main/java/dev/midplane/fuzzysearch/fuzzysearchers/InvertedIndex.java

[zodvik]

@gra