feat: channel data with cache #318
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
WalkthroughThe changes remove the Changes
Sequence Diagram(s)sequenceDiagram
participant Client as Client
participant Handler as EventHandler
participant Cache as CacheChecker
Client->>Handler: Request channel data
Handler->>Cache: Check shouldInvalidateCache(channel)
Cache-->>Handler: Return validation status
alt Cache invalid
Handler->>Handler: Update cacheUpdatedAt and refresh cache
end
Handler-->>Client: Return response (cached or updated)
Poem
✨ Finishing Touches
🪧 TipsChatThere are 3 ways to chat with CodeRabbit:
Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments. CodeRabbit Commands (Invoked using PR comments)
Other keywords and placeholders
CodeRabbit Configuration File (
|
|
![coderabbitai[bot]](https://avatars.githubusercontent.com/in/347564?s=60&v=4){kind=small}
There was a problem hiding this comment.
Actionable comments posted: 2
🧹 Nitpick comments (1)
packages/core/server/api/channel/index.get.ts (1)
50-52: Document cache handler options.Add JSDoc comments to document the caching behavior and options.
}, { + // Invalidate cache when channel is updated shouldInvalidateCache, + // Consider adding other options like: + // maxAge: 60 * 60, // 1 hour + // staleWhileRevalidate: true })
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro
📒 Files selected for processing (2)
apps/web-app/nuxt.config.ts(0 hunks)packages/core/server/api/channel/index.get.ts(2 hunks)
💤 Files with no reviewable changes (1)
- apps/web-app/nuxt.config.ts
⏰ Context from checks skipped due to timeout of 90000ms (1)
- GitHub Check: build
Comment on lines
+5
to
+7
| let cacheUpdatedAt: string | null = null | ||
|
|
||
| export default defineCachedEventHandler(async () => { |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Consider using a more robust caching solution.
The current implementation using a global variable for cache state has several potential issues:
- In a multi-tenant environment, all tenants share the same cache state
- Possible memory leaks in long-running servers
- Potential race conditions during initialization
Consider these alternatives:
- Use a proper caching solution (e.g., Redis)
- If keeping the current approach, use a Map to support multiple channels:
-let cacheUpdatedAt: string | null = null
+const channelCacheMap = new Map<string, string>()- Add strict typing:
type ChannelCache = {
updatedAt: string | null;
}
Comment on lines
+58
to
+72
| async function shouldInvalidateCache(): Promise<boolean> { | ||
| const { channelId } = useRuntimeConfig() | ||
|
|
||
| const channel = await repository.channel.find(channelId) | ||
| if (!channel) { | ||
| return true | ||
| } | ||
|
|
||
| if (cacheUpdatedAt !== channel.updatedAt) { | ||
| cacheUpdatedAt = channel.updatedAt | ||
| return true | ||
| } | ||
|
|
||
| return false | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Improve cache invalidation robustness and performance.
The current implementation has several areas for improvement:
- Each cache validation requires a DB query
- Missing error handling for repository calls
- No TTL or expiration strategy
- No logging of cache invalidation events
Consider this enhanced implementation:
async function shouldInvalidateCache(): Promise<boolean> {
const { channelId } = useRuntimeConfig()
+ if (!channelId) {
+ return true
+ }
- const channel = await repository.channel.find(channelId)
+ try {
+ const channel = await repository.channel.find(channelId)
+ if (!channel) {
+ return true
+ }
- if (!channel) {
- return true
- }
+ if (cacheUpdatedAt !== channel.updatedAt) {
+ console.log(`Cache invalidated for channel ${channelId}. Previous: ${cacheUpdatedAt}, New: ${channel.updatedAt}`)
+ cacheUpdatedAt = channel.updatedAt
+ return true
+ }
- if (cacheUpdatedAt !== channel.updatedAt) {
- cacheUpdatedAt = channel.updatedAt
- return true
+ return false
+ } catch (error) {
+ console.error('Error checking cache validity:', error)
+ return true
}
-
- return false
}Consider implementing a more sophisticated caching strategy:
- Add TTL to prevent stale cache in case
updatedAtisn't changed - Use cache warming to prevent cold starts
- Implement circuit breaker for DB calls
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
Suggested change
| async function shouldInvalidateCache(): Promise<boolean> { | |
| const { channelId } = useRuntimeConfig() | |
| const channel = await repository.channel.find(channelId) | |
| if (!channel) { | |
| return true | |
| } | |
| if (cacheUpdatedAt !== channel.updatedAt) { | |
| cacheUpdatedAt = channel.updatedAt | |
| return true | |
| } | |
| return false | |
| } | |
| async function shouldInvalidateCache(): Promise<boolean> { | |
| const { channelId } = useRuntimeConfig() | |
| if (!channelId) { | |
| return true | |
| } | |
| try { | |
| const channel = await repository.channel.find(channelId) | |
| if (!channel) { | |
| return true | |
| } | |
| if (cacheUpdatedAt !== channel.updatedAt) { | |
| console.log(`Cache invalidated for channel ${channelId}. Previous: ${cacheUpdatedAt}, New: ${channel.updatedAt}`) | |
| cacheUpdatedAt = channel.updatedAt | |
| return true | |
| } | |
| return false | |
| } catch (error) { | |
| console.error('Error checking cache validity:', error) | |
| return true | |
| } | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Summary by CodeRabbit
Chores
New Features