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Redis instance configuration via Sentinel
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Hello, I just finished the first draft of the proposal. Comments welcomed:
Introduction
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Sentinel already acts as a configuration device for clients. This
proposal further extends its role as a configuration device for Redis
instances after an instance restart.
This has a number of benefits such as better handling of reboots,... more »
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How ping works on sentinel for down-after-milliseconds
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Hi I have a question on how pings work on the sentinel side, for example I have configured the sentinel (down-after-milliseconds mymaster 10000), my master is the Master, If I have multiple clients try to get a chunky amount of data out of redis (200mb per client call). Occasionally sentinel will... more »
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Loss of precision when passing large integers from Lua to Redis
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I'm posting this to hopefully save others the many hours of debugging it took me to discover why a complex Lua script occasionally misbehaved. The summary is that the default conversion of numbers from Lua to Redis does not use a sufficient number of digits during stringification. I've added this... more »
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Breaking changes on Sentinel when upgrade from 2.6.12 to 2.6.13
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Hi everyone I have setup redis(master-slave) in prod, leverage sentinel to do the auto fail-over process. Each Sentinel monitors the redis instance on the other server. As the sentinel will trigger the notify script or failover script, in where I have my logic for configuring the failover process. it works... more »
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Reliable Pubsub Messaging
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Hi,
We currently use Redis for some storage of data, but I am considering
using pubsub to handle status messages between components...we are
transitioning to a real-time processing framework, but need to be able
to interface with this from outside of the system (ex. the webserver,
etc)...and I want to use pubsub to do this.... more »
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Nature of Redis - CPU bound, I/O bound, memory bound or network bound
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I want to know the nature of elastic search database, in the case when I am shipping logs via an indexer from redis to the ES database. I have to figure out the types of each of these - Redis, Indexer(which I know is CPU bound), and ES so that I can determine which system to run which one on. Please help.... more »
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Sentinel and Automatic Discovery/Registration
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Hi, Some time ago in my company, we developed an tool similar to Sentinel, on top of Zookeeper. But it's less robust, and do not cover some important cases. We are now between improving it, or move to Sentinel(more probably). Searching here in the group I found this fork: [link]... more »
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technical article on sentinel
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[link]
Didn't see this on the list, so I thought I'd share. Especially because
its headline is somewhat sensational.
I don't have any skin in the game as I currently totally disbelieve in
clustered data stores and won't be using sentinel, but for those who are... more »
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Reading from all lists in Logstash
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I am using Logstash to take input from redis. When I export the logs from Logstash to Redis, I use a dynamic key name, and hence I have multiple lists built up in Redis. THis work fine. But now when I read from Redis, I want to read form all the lists created dynamically. How do I do it? What do I specify in the "key" when I read... more »
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