add comment for all service files

[zed-wong]

User description

Description

Add comment for all service files in improve readability

Summary of changes

Added comment of 'what does this service do' on top of each service file

How to test the changes

Read

Related issues

https://github.com/Hu-Fi/Mr.Market/issues/195

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PR Type

documentation

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Description

• Added detailed JSDoc comments to multiple service files to improve code readability and maintainability.
• Each service file now includes comprehensive documentation on class purpose, dependencies, methods, error handling, and notes.

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Changes walkthrough 📝

Relevant files

Documentation

20 files auth.service.ts Add detailed JSDoc comments to AuthService class                  server/src/modules/auth/auth.service.ts Added detailed JSDoc comments explaining the AuthService class, its dependencies, methods, and error handling. +33/-3    coingecko.service.ts Add detailed JSDoc comments to CoingeckoProxyService class server/src/modules/coingecko/coingecko.service.ts Added detailed JSDoc comments explaining the CoingeckoProxyService class, its dependencies, methods, and error handling. +33/-1    customConfig.service.ts Add detailed JSDoc comments to CustomConfigService class  server/src/modules/customConfig/customConfig.service.ts Added detailed JSDoc comments explaining the CustomConfigService class, its dependencies, methods, and notes. +26/-0    health.service.ts Add detailed JSDoc comments to HealthService class              server/src/modules/health/health.service.ts Added detailed JSDoc comments explaining the HealthService class, its dependencies, methods, and error handling. +33/-0    logger.service.ts Add detailed JSDoc comments to CustomLogger class                server/src/modules/logger/logger.service.ts Added detailed JSDoc comments explaining the CustomLogger class, its dependencies, methods, and configuration. +31/-0    marketdata.service.ts Add detailed JSDoc comments to MarketdataService class      server/src/modules/marketdata/marketdata.service.ts Added detailed JSDoc comments explaining the MarketdataService class, its dependencies, methods, and error handling. +62/-0    exchange.service.ts Add detailed JSDoc comments to ExchangeService class          server/src/modules/mixin/exchange/exchange.service.ts Added detailed JSDoc comments explaining the ExchangeService class, its dependencies, methods, and error handling. +88/-1    arbitrage.listener.ts Add detailed JSDoc comments to ArbitrageListener class      server/src/modules/mixin/listeners/arbitrage.listener.ts Added detailed JSDoc comments explaining the ArbitrageListener class, its dependencies, methods, and notes. +27/-0    exchange.listener.ts Add detailed JSDoc comments to ExchangeListener class        server/src/modules/mixin/listeners/exchange.listener.ts Added detailed JSDoc comments explaining the ExchangeListener class, its dependencies, methods, and notes. +36/-0    market_making.listener.ts Add detailed JSDoc comments to MarketMakingListener class server/src/modules/mixin/listeners/market_making.listener.ts Added detailed JSDoc comments explaining the MarketMakingListener class, its dependencies, methods, and notes. +28/-0    mixin.listener.ts Add detailed JSDoc comments to MixinListener class              server/src/modules/mixin/listeners/mixin.listener.ts Added detailed JSDoc comments explaining the MixinListener class, its dependencies, methods, and notes. +38/-0    spot.listener.ts Add detailed JSDoc comments to SpotOrderListener class      server/src/modules/mixin/listeners/spot.listener.ts Added detailed JSDoc comments explaining the SpotOrderListener class, its dependencies, methods, and notes. +37/-0    message.service.ts Add detailed JSDoc comments to MessageService class            server/src/modules/mixin/message/message.service.ts Added detailed JSDoc comments explaining the MessageService class, its dependencies, methods, and error handling. +47/-0    bigone.service.ts Add detailed JSDoc comments to BigoneService class              server/src/modules/mixin/rebalance/bigone/bigone.service.ts Added detailed JSDoc comments explaining the BigoneService class, its dependencies, methods, and error handling. +44/-0    rebalance.service.ts Add detailed JSDoc comments to RebalanceService class        server/src/modules/mixin/rebalance/rebalance.service.ts Added detailed JSDoc comments explaining the RebalanceService class, its dependencies, methods, and error handling. +46/-0    snapshots.service.ts Add detailed JSDoc comments to SnapshotsService class        server/src/modules/mixin/snapshots/snapshots.service.ts Added detailed JSDoc comments explaining the SnapshotsService class, its dependencies, methods, and error handling. +54/-6    user.service.ts Add detailed JSDoc comments to UserService class                  server/src/modules/mixin/user/user.service.ts Added detailed JSDoc comments explaining the UserService class, its dependencies, methods, and error handling. +34/-0    performance.service.ts Add detailed JSDoc comments to PerformanceService class    server/src/modules/performance/performance.service.ts Added detailed JSDoc comments explaining the PerformanceService class, its dependencies, methods, and notes. +26/-3    strategy.service.ts Add detailed JSDoc comments to StrategyService class          server/src/modules/strategy/strategy.service.ts Added detailed JSDoc comments explaining the StrategyService class, its dependencies, methods, and error handling. +78/-3    trade.service.ts Add detailed JSDoc comments to TradeService class                server/src/modules/trade/trade.service.ts Added detailed JSDoc comments explaining the TradeService class, its dependencies, methods, and error handling. +33/-0

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Name	Status	Preview	Comments	Updated (UTC)
mr-market	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 19, 2024 5:23am

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PR Reviewer Guide 🔍

(Review updated until commit https://github.com/Hu-Fi/Mr.Market/commit/e27ce2f1f77f1ba5248ffd82c9e9d16b746d5556)

⏱️ Estimated effort to review [1-5]	2
🧪 Relevant tests	No
🔒 Security concerns	No
⚡ Key issues to review	None

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Failed to generate code suggestions for PR

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Persistent review updated to latest commit https://github.com/Hu-Fi/Mr.Market/commit/e27ce2f1f77f1ba5248ffd82c9e9d16b746d5556

[github-actions[bot]]

PR Code Suggestions ✨

Category	Suggestion	Score
Security	Enhance security by abstracting API key management to a dedicated service with encryption and access controls ___ **To ensure better security practices, consider abstracting the API key management to a separate service or module that handles encryption and access controls, rather than directly loading and managing API keys within the service.** [server/src/modules/mixin/exchange/exchange.service.ts [89-91]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-b4d701c594440771180bbf709c88654f1d8a3806e45b2e035b3b36572ab3cda5R89-R91) ```diff import * as ccxt from 'ccxt'; import BigNumber from 'bignumber.js'; import { Cron } from '@nestjs/schedule'; +import { ApiKeyManagementService } from 'path/to/security'; ``` Suggestion importance[1-10]: 10 Why: Abstracting API key management to a dedicated service with encryption and access controls is a critical security improvement, ensuring better protection of sensitive information.	10
Performance	Improve performance and reduce latency by using WebSocket connections for market data updates ___ **For better performance and reduced latency, consider using WebSocket connections for watching market data instead of polling methods if supported by the exchange APIs.** [server/src/modules/marketdata/marketdata.service.ts [63-65]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-0dd39c41f8551fc930baf35b0c2b376e2ac0d12e686a82d86d7cee070f4bf16aR63-R65) ```diff import * as ccxt from 'ccxt'; import { Cache } from 'cache-manager'; import { CACHE_MANAGER } from '@nestjs/cache-manager'; +import { WebSocket } from 'ws'; ``` Suggestion importance[1-10]: 9 Why: Using WebSocket connections can greatly improve performance and reduce latency, which is crucial for real-time market data updates.	9
Validation	Enhance the reliability of withdrawal requests by adding input validation ___ **For the createWithdrawal method, consider implementing input validation to ensure that the parameters meet expected formats and constraints before processing.** [server/src/modules/mixin/rebalance/bigone/bigone.service.ts [29]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-a3302c8c9bb13445d2bd14f68aef2841d4bf3a779d9033f5ed05f7014192b70bR29-R29) ```diff -createWithdrawal(symbol: string, targetAddress: string, amount: string, memo?: string, guid?: string, gatewayName?: string): Creates a new withdrawal request. +createWithdrawal(symbol: string, targetAddress: string, amount: string, memo?: string, guid?: string, gatewayName?: string): void { + if (!validateSymbol(symbol) || !validateAddress(targetAddress) || !validateAmount(amount)) { + throw new Error("Invalid input parameters"); + } + // existing implementation +} ``` Suggestion importance[1-10]: 9 Why: Adding input validation significantly enhances the reliability and security of withdrawal requests, making it a crucial improvement.	9
Error handling	Enhance error handling by adding a retry mechanism with exponential backoff for API requests ___ **To enhance error handling, consider implementing a retry mechanism with exponential backoff for API requests to CoinGecko. This can help manage transient network issues or API rate limits more gracefully.** [server/src/modules/coingecko/coingecko.service.ts [34-36]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-fc8069e1fb6be7ac5ca3b7e95e0de665542438306d2ea1ac330338bb91117b42R34-R36) ```diff import { Cache } from 'cache-manager'; import { CACHE_MANAGER } from '@nestjs/cache-manager'; import { Inject, Injectable } from '@nestjs/common'; +import { retryBackoff } from 'backoff-rxjs'; ``` Suggestion importance[1-10]: 8 Why: Implementing a retry mechanism with exponential backoff is a significant improvement for error handling, especially for network-related issues and API rate limits.	8
	Enhance robustness by adding error handling within event processing methods ___ **To enhance error handling, consider implementing try-catch blocks within the handleReleaseTokenEvent method to catch and handle potential exceptions during the event processing.** [server/src/modules/mixin/listeners/mixin.listener.ts [22]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-a80b7fd33a110e4c518ad2bea7d776f38f62284e85057a7b409a1a496a05552eR22-R22) ```diff -handleReleaseTokenEvent(e: MixinReleaseTokenEvent): Handles the 'mixin.release' event. +handleReleaseTokenEvent(e: MixinReleaseTokenEvent): void { + try { + // existing implementation + } catch (error) { + // error handling logic + } +} ``` Suggestion importance[1-10]: 8 Why: Implementing try-catch blocks enhances robustness by handling potential exceptions, which is important for maintaining reliability in event processing.	8
Best practice	Encapsulate class methods using TypeScript access modifiers to enhance class API cleanliness and maintainability ___ **Consider using TypeScript's access modifiers (private, protected, public) for methods in the StrategyService class to encapsulate the class's internal behavior and expose only necessary methods to the outside. This can help in maintaining a clean API for the service class.** [server/src/modules/strategy/strategy.service.ts [26-32]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-413cb1b28e0d47a46768f97d10145a8e14d9e46b0a195768786127305916d944R26-R32) ```diff -- startArbitrageIfNotStarted(): Starts an arbitrage strategy if it is not already running. -- pauseStrategyIfNotPaused(): Pauses a strategy if it is not already paused. -- startArbitrageStrategyForUser(): Starts an arbitrage strategy for a user. -- stopStrategyForUser(): Stops a strategy for a user and cancels all active orders. +- private startArbitrageIfNotStarted(): Starts an arbitrage strategy if it is not already running. +- private pauseStrategyIfNotPaused(): Pauses a strategy if it is not already paused. +- public startArbitrageStrategyForUser(): Starts an arbitrage strategy for a user. +- public stopStrategyForUser(): Stops a strategy for a user and cancels all active orders. ``` Suggestion importance[1-10]: 8 Why: Using access modifiers is a best practice in TypeScript to encapsulate internal behavior and maintain a clean API. This suggestion improves code maintainability and readability by clearly defining the visibility of each method.	8
	Improve type safety and readability by adding explicit return type annotations ___ **Consider adding explicit type annotations to the parameters of the handleMarketMakingCreate method to improve type safety and code readability.** [server/src/modules/mixin/listeners/market_making.listener.ts [20]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-af2b696faff84be74534526cbd7bca07e7a0630c04ce6f07be1b846fc8424ebbR20-R20) ```diff -handleMarketMakingCreate(details: MarketMakingMemoDetails, snapshot: SafeSnapshot): Handles the 'market_making.create' event. +handleMarketMakingCreate(details: MarketMakingMemoDetails, snapshot: SafeSnapshot): void { ``` Suggestion importance[1-10]: 7 Why: Adding explicit return type annotations improves type safety and code readability, which is a good practice, but it is not crucial for functionality.	7
Maintainability	Improve testability and maintainability by using dependency injection for external dependencies ___ **Consider using dependency injection for createHash and getUserMe to enhance testability and maintainability of the AuthService. This approach allows for easier mocking and testing of these dependencies.** [server/src/modules/auth/auth.service.ts [33-35]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-eab35d13c5ac358d201e1aa04e568c972b43247760dfb4928be546c494f46e6fR33-R35) ```diff import { JwtService } from '@nestjs/jwt'; -import { Injectable, UnauthorizedException } from '@nestjs/common'; +import { Injectable, UnauthorizedException, Inject } from '@nestjs/common'; +import { HashService, UserMeService } from 'path/to/services'; ``` Suggestion importance[1-10]: 7 Why: The suggestion improves testability and maintainability by using dependency injection, which is a good practice. However, it is not addressing a critical issue.	7
	Improve readability and maintainability by refactoring the large comment block into smaller, method-specific comments ___ **Refactor the large comment block into smaller, method-specific comments placed directly above each method. This improves readability and maintainability, making it easier to understand the purpose and functionality of individual methods without scrolling through a large block of text.** [server/src/modules/strategy/strategy.service.ts [1-74]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-413cb1b28e0d47a46768f97d10145a8e14d9e46b0a195768786127305916d944R1-R74) ```diff -/** - * StrategyService - * - * This service manages and executes trading strategies, including arbitrage and market making. - * It utilizes the CCXT library for interacting with cryptocurrency exchanges and provides functionality - * for starting, stopping, and managing strategies for users. - * ... - */ +// Individual method comments placed above each method ``` Suggestion importance[1-10]: 7 Why: Breaking down the large comment block into method-specific comments enhances readability and maintainability. It allows developers to quickly understand the purpose of each method without having to scroll through a lengthy comment section.	7
	Improve maintainability and testability by refactoring complex methods into smaller, focused methods ___ **Refactor the handleSpotOrderCreateEvent method to separate concerns, such as validation and event emission, into smaller, more focused methods. This can improve maintainability and testability.** [server/src/modules/mixin/listeners/spot.listener.ts [21]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-9b96aa45a591410a1dec754649c4667c171f120038542e25032efd39431ba67fR21-R21) ```diff -handleSpotOrderCreateEvent(event: SpotOrderCreateEvent): Handles the 'spot.create' event. +handleSpotOrderCreateEvent(event: SpotOrderCreateEvent): void { + validateEvent(event); + processEvent(event); + emitPlaceOrderEvent(event); +} ``` Suggestion importance[1-10]: 6 Why: Refactoring to separate concerns improves maintainability and testability, but it is not addressing a critical issue, making it a moderate improvement.	6

[github-actions[bot]]

Persistent review updated to latest commit https://github.com/Hu-Fi/Mr.Market/commit/e27ce2f1f77f1ba5248ffd82c9e9d16b746d5556

[github-actions[bot]]

Persistent review updated to latest commit https://github.com/Hu-Fi/Mr.Market/commit/e27ce2f1f77f1ba5248ffd82c9e9d16b746d5556

[github-actions[bot]]

Failed to generate code suggestions for PR

[github-actions[bot]]

PR Code Suggestions ✨

Category	Suggestion	Score
Enhancement	Add error handling to the transaction method to enhance service robustness ___ **Consider implementing error handling in the sendMixinTx method to manage exceptions and provide feedback on transaction failures, enhancing the robustness of the service.** [server/src/modules/mixin/snapshots/snapshots.service.ts [28]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-dd336e520fcec14b837cd72c0852b94e85fb8e130fc2a3431b49fef7e4d94c29R28-R28) ```diff -sendMixinTx(opponent_id: string, asset_id: string, amount: string): Sends a transaction on the Mixin network. +sendMixinTx(opponent_id: string, asset_id: string, amount: string): Promise { + try { + // existing implementation + } catch (error) { + // handle error appropriately + throw new Error(`Failed to send transaction: ${error.message}`); + } +} ``` Suggestion importance[1-10]: 10 Why: Adding error handling is essential for robustness, especially in transaction-related methods where failures need to be managed and logged appropriately.	10
	Enhance error handling and user feedback in the cancelAllOrders method ___ **Refactor the method cancelAllOrders to handle exceptions and provide feedback about the operation's success or failure, improving error handling and user feedback.** [server/src/modules/strategy/strategy.service.ts [46]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-413cb1b28e0d47a46768f97d10145a8e14d9e46b0a195768786127305916d944R46-R46) ```diff -- cancelAllOrders(): Cancels all orders for the specified pair on an exchange. +- cancelAllOrders(): Cancels all orders for the specified pair on an exchange. Throws an exception or returns a result indicating the operation's success or failure. ``` Suggestion importance[1-10]: 8 Why: Improving error handling and providing feedback about the operation's success or failure is crucial for robustness and user experience. This suggestion addresses a significant aspect of the method's functionality.	8
	Improve type safety by using a more specific type for the snapshot parameter ___ **Consider using a more specific type than SafeSnapshot for the snapshot parameter in the handleMarketMakingCreate method. If SafeSnapshot is a general type that includes more data than necessary, defining a more specific type could improve type safety and make the function's requirements clearer.** [server/src/modules/mixin/listeners/market_making.listener.ts [20]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-af2b696faff84be74534526cbd7bca07e7a0630c04ce6f07be1b846fc8424ebbR20-R20) ```diff -handleMarketMakingCreate(details: MarketMakingMemoDetails, snapshot: SafeSnapshot): Handles the 'market_making.create' event. +handleMarketMakingCreate(details: MarketMakingMemoDetails, snapshot: MarketMakingSnapshot): Handles the 'market_making.create' event. ``` Suggestion importance[1-10]: 7 Why: Using a more specific type can improve type safety and code clarity, but it is not critical unless `SafeSnapshot` is indeed too generic and includes unnecessary data.	7
Security	Improve security by adding password complexity checks in the validateUser method ___ **To improve security, consider validating the length and complexity of the password parameter in the validateUser method before processing. This helps prevent simple passwords and potential brute-force attacks.** [server/src/modules/auth/auth.service.ts [20]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-eab35d13c5ac358d201e1aa04e568c972b43247760dfb4928be546c494f46e6fR20-R20) ```diff -validateUser(password: string): Validates the admin password and returns a signed JWT. +validateUser(password: string): string { + if (password.length < 8 || !password.match(/complex_regex/)) { + throw new UnauthorizedException('Password does not meet complexity requirements.'); + } + // existing implementation +} ``` Suggestion importance[1-10]: 9 Why: Adding password complexity checks is a crucial security improvement that helps prevent brute-force attacks and ensures stronger passwords.	9
Possible issue	Use a numeric type for monetary values to prevent calculation errors ___ **Replace the use of string type for the amount parameter in the createWithdrawal method with a numeric type or a specific class that handles monetary values to prevent potential issues with currency calculations.** [server/src/modules/mixin/rebalance/bigone/bigone.service.ts [29]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-a3302c8c9bb13445d2bd14f68aef2841d4bf3a779d9033f5ed05f7014192b70bR29-R29) ```diff -createWithdrawal(symbol: string, targetAddress: string, amount: string, memo?: string, guid?: string, gatewayName?: string): Creates a new withdrawal request. +createWithdrawal(symbol: string, targetAddress: string, amount: number, memo?: string, guid?: string, gatewayName?: string): Creates a new withdrawal request. ``` Suggestion importance[1-10]: 9 Why: Using a numeric type for monetary values is crucial to prevent calculation errors, which can have significant consequences in financial applications.	9
Error handling	Add error handling in the coinsId method to manage API exceptions effectively ___ **Implement error handling in the coinsId method to manage exceptions from the CoinGecko API, such as rate limits or server errors. This ensures the service remains robust and can handle API downtimes or issues gracefully.** [server/src/modules/coingecko/coingecko.service.ts [18]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-fc8069e1fb6be7ac5ca3b7e95e0de665542438306d2ea1ac330338bb91117b42R18-R18) ```diff -coinsId(id: string): Fetches detailed information about a specific coin by its ID. +async coinsId(id: string): Promise { + try { + const response = await this.coinGeckoClient.coins.fetch(id); + return response.data; + } catch (error) { + this.logger.error('Failed to fetch coin details', error); + throw new InternalServerErrorException('Unable to fetch coin details at this time.'); + } +} ``` Suggestion importance[1-10]: 8 Why: Adding error handling is important for robustness and reliability, especially when dealing with external APIs that may have downtimes or rate limits.	8
Maintainability	Refactor the method to separate concerns for better maintainability ___ **Refactor the handleReleaseTokenEvent method to separate concerns. Currently, it validates data, updates order states, and records history, which can be split into smaller, more focused functions. This will improve maintainability and testability.** [server/src/modules/mixin/listeners/mixin.listener.ts [22]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-a80b7fd33a110e4c518ad2bea7d776f38f62284e85057a7b409a1a496a05552eR22-R22) ```diff -handleReleaseTokenEvent(e: MixinReleaseTokenEvent): Handles the 'mixin.release' event. +handleReleaseTokenEvent(e: MixinReleaseTokenEvent): void { + validateReleaseTokenEvent(e); + updateOrderState(e); + recordReleaseHistory(e); +} ``` Suggestion importance[1-10]: 8 Why: Separating concerns in the method will improve maintainability and testability, making the code easier to manage and understand.	8
Best practice	Enhance testability and decoupling by using dependency injection for cryptographic functions ___ **Consider using dependency injection for createHash to enhance testability and decoupling from the Node.js crypto module. This approach allows easier mocking and testing of the AuthService, especially when dealing with cryptographic functions.** [server/src/modules/auth/auth.service.ts [32]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-eab35d13c5ac358d201e1aa04e568c972b43247760dfb4928be546c494f46e6fR32-R32) ```diff -import { createHash } from 'crypto'; +import { CryptoService } from './crypto.service'; // Assuming CryptoService wraps createHash functionality ``` Suggestion importance[1-10]: 7 Why: This suggestion improves testability and decoupling, which are good practices. However, it requires significant refactoring and the creation of a new service, which may not be immediately necessary.	7
	Improve type safety and maintainability by defining TypeScript interfaces for DTOs ___ **Consider using TypeScript interfaces or types to define the structure of the DTOs and other complex objects used in the service. This will enhance type safety and improve the maintainability of the code.** [server/src/modules/strategy/strategy.service.ts [13]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-413cb1b28e0d47a46768f97d10145a8e14d9e46b0a195768786127305916d944R13-R13) ```diff -- DTOs: ArbitrageStrategyDto and PureMarketMakingStrategyDto for handling strategy data transfer objects. +- DTOs: IArbitrageStrategyDto and IPureMarketMakingStrategyDto for handling strategy data transfer objects. ``` Suggestion importance[1-10]: 7 Why: Using TypeScript interfaces or types for DTOs can enhance type safety and maintainability. However, the suggestion does not directly address any critical issues or bugs in the current implementation.	7
Performance	Improve the efficiency of the watchSymbols method by implementing concurrency control ___ **To ensure that the watchSymbols method can handle multiple pairs and exchanges efficiently, consider implementing concurrency control or using asynchronous patterns.** [server/src/modules/strategy/strategy.service.ts [34]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-413cb1b28e0d47a46768f97d10145a8e14d9e46b0a195768786127305916d944R34-R34) ```diff -- watchSymbols(): Watches order books for the specified pair on two exchanges. +- watchSymbols(): Watches order books for multiple pairs on multiple exchanges concurrently, using asynchronous patterns to improve efficiency. ``` Suggestion importance[1-10]: 7 Why: Enhancing the `watchSymbols` method to handle multiple pairs and exchanges concurrently can significantly improve efficiency. This is a valuable improvement but not critical to the current functionality.	7
	Enhance performance by adding pagination support to the getTickers method ___ **For the getTickers method, consider adding pagination support to handle large sets of data efficiently. This can prevent performance bottlenecks when dealing with multiple symbols or high-frequency updates.** [server/src/modules/marketdata/marketdata.service.ts [23]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-0dd39c41f8551fc930baf35b0c2b376e2ac0d12e686a82d86d7cee070f4bf16aR23-R23) ```diff -getTickers(exchange: string, symbols: string[]): Fetches tickers for specified symbols from a given exchange. +getTickers(exchange: string, symbols: string[], page: number = 1, pageSize: number = 100): Fetches tickers for specified symbols from a given exchange with pagination. + const startIndex = (page - 1) * pageSize; + const endIndex = startIndex + pageSize; + const paginatedSymbols = symbols.slice(startIndex, endIndex); + // existing implementation using paginatedSymbols ``` Suggestion importance[1-10]: 6 Why: Adding pagination can improve performance, but it may not be necessary for all use cases. The suggestion is beneficial but not critical.	6
	Reduce API calls and enhance performance by adding caching to the getSupportedExchanges method ___ **Implement caching for the method getSupportedExchanges to reduce the number of API calls and improve the performance of the service.** [server/src/modules/strategy/strategy.service.ts [24]](https://github.com/Hu-Fi/Mr.Market/pull/197/files#diff-413cb1b28e0d47a46768f97d10145a8e14d9e46b0a195768786127305916d944R24-R24) ```diff -- getSupportedExchanges(): Returns a list of supported exchanges. +- getSupportedExchanges(): Returns a list of supported exchanges, utilizing caching to improve performance and reduce API calls. ``` Suggestion importance[1-10]: 6 Why: Implementing caching can improve performance by reducing the number of API calls. While beneficial, this suggestion is more of an optimization and does not address any immediate issues.	6