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Memcached and Sherpa for Yahoo! News Activity Data Service :
Mixer, the recently announced Yahoo's new data service for news activities, uses Memcached and Sherpa for its data backend. Plus a combination of asynchronous libraries and task execution tools:
The data processing model and the clear separation between read and write data solutions is not only compelling, but essential for maintaining the SLA (max. 250ms/response):
entity_8879 …
…Redis List and write stuff in log file.
There are better ways to do it . And then there are dedicated solutions .
Update : for more comments see the Hacker News thread .
Original title and link: Another Redis Use Case: Centralized Logging ( NoSQL database ©myNoSQL)
…leaderboard pattern is the implementation of a site like Reddit or Hacker News, where news are ordered accordingly to a forumla similar to: score = points / time^alpha So user votes will raise the news in a proportional way, but time will take the news down exponentially. Well the actual algorithm is up to you, this will not change our pattern.
This pattern works in this way, starting from the observation that probably only the latest, for instance, 1000 news are good candidates to stay …
News on Lua <-> Redis type conversion I just pushed a new commit in the scripting branch on github that changes how types are converted from/to Redis protocol types.
A key feature is the ability to return from Lua commands everything is valid in the Redis protocol, so that your Lua scripts can return everything a C coded command is able to return. We where almost there with the old scripting branch, but what was missing was the ability to return tables of tables. Now this …
…up with the right swing to code a first implementation we can collectively play with, to refine our feelings.
You can comment this entry in the Hacker News post
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