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add version specifier to URL preview cache

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This commit is contained in:
Hazelnoot 2025-05-05 09:24:28 -04:00
parent 80819f03e7
commit 387efac23f
1 changed files with 9 additions and 6 deletions
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15
packages/backend/src/server/web/UrlPreviewService.ts
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@ -30,6 +30,9 @@ export type LocalSummalyResult = SummalyResult & {
haveNoteLocally?: boolean;
};
// Increment this to invalidate cached previews after a major change.
const cacheFormatVersion = 1;
@Injectable()
export class UrlPreviewService {
private logger: Logger;
@ -119,10 +122,10 @@ export class UrlPreviewService {
};
}
const key = `${url}@${lang}`;
const cached = await this.previewCache.get(key);
const cacheKey = `${url}@${lang}@${cacheFormatVersion}`;
const cached = await this.previewCache.get(cacheKey);
if (cached !== undefined) {
this.logger.info(`Returning cache preview of ${key}`);
this.logger.info(`Returning cache preview of ${cacheKey}`);
// Cache 7days
reply.header('Cache-Control', 'max-age=604800, immutable');
@ -134,8 +137,8 @@ export class UrlPreviewService {
}
this.logger.info(this.meta.urlPreviewSummaryProxyUrl
? `(Proxy) Getting preview of ${key} ...`
: `Getting preview of ${key} ...`);
? `(Proxy) Getting preview of ${cacheKey} ...`
: `Getting preview of ${cacheKey} ...`);
try {
const summary: LocalSummalyResult = this.meta.urlPreviewSummaryProxyUrl
@ -174,7 +177,7 @@ export class UrlPreviewService {
await this.inferActivityPubLink(summary);
}
this.previewCache.set(key, summary);
this.previewCache.set(cacheKey, summary);
// Cache 7days
reply.header('Cache-Control', 'max-age=604800, immutable');