![]() It uses its database as a read-only data store as far as the web application is concerned. The traditional answer to the question “should we use SQLite for our web application in production?” is an emphatic NO. Switch to using SQLite for our database needs in production was born. Opportunity to simplify and reduce hosting complexity and cost we can get. Of the content into over 100 languages and you can start to get the idea of where it might get interesting. On its face doesn’t look like it would be a complex application to write, maintain, or run.īut when you throw over 100 million unique visitors per week at any site it can complicate things quickly. Even though our CDN ofĬhoice doesn’t support Brotli, assets can be pre-compressed and uploaded ready Rates compared to GZip at the expense of more CPU time. It’s clear that Brotli compression can achieve significantly higher compression We are going to further improve in the future by moving the images outside the The original average of 75TB transferred data per day, we dropped down to 15TB. Reports graphed a significant drop on costs marking the project a success. By adding theĬorrect Content-Encoding headers, the S3 objects are ready to be served by theĪlthough all three solutions can reduce the Bundle size, the third provided theīest performance to effort ratio and we proceeded with implementation. Since CloudFront does not support on the fly Brotli compression, we prepare andĬompress the Bundles on the app level before uploading to S3. The CloudFront GZip mechanism which compressed the bundle to about 2.2MiB. Supported by Firefox and all other major browsers as alternative method for HTTPīrotli reduced the size of the bundle down to 500KiB, about 25% of the size of Third hypothesis was to replace GZip with Brotli compression. This reduced the Bundle size to 1.1MiB without accountingįor the size of the images that will be transferred. Snippets are displayed to all users, we can benefit by not transferring all Second hypothesis was to replace the images with links to images. The images were optimized but the Bundle shrunk for only Optipng against all images in the bundle to First hypothesis was that weĬould reduce the Bundle size by reducing the image size. The text and the image in a base64 encoded format. ![]() ![]() The solutionīundles include everything a Snippet needs to be displayed: the targeting rules, Transferred per month, despite the local browser caching. Transferred data per day or about 2.25 PB (yes, that’s Petabytes!) of data Given thatįirefox requests new Bundles every 4 hours that translated to about 75 TB of The Bundle file-size increased from about 200 KiB to more than 4MiB. Mozilla’s Lifecycle Marketing Team was increasing the number of Snippets for the One layer of caching is aĭuring the last months we observed a significant uptake of our CDN costs as Levels of caching takes care of the delivery. A carefully designed system with multiple The Bundle is transferred to the client where the locally executed decisionĮngine selects a snippet to display. Including their Style-Sheets, images, metadata and the JS decision engine. BundlesĪre HTML documents that contain all Snippets targeted to a group of users, To achieve personalized, activity based messaging in a privacy respecting andĮfficient manner, the service creates a Bundle of Snippets per locale. Mozilla World, useful tips and tricks based on user activity and sometimes Mozilla to communicate with Firefox users directly by placing a snippet of textĪnd an image on their new tab page. Using Brotli compression to reduce CDN costs
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