Can a read replica become master/primary (with automatic or manual promotion) in Google Cloud Memorystore Redis Standard? If so: How do I did this? Why do they present High Availability as a separate feature, when read-replicas could just serve this…
at first, I want a HA PostgreSQL by repmgr subnet its 10.0.30.0/24 da1 server 10.0.30.7 -- master da2 server 10.0.30.6 -- worker so i get error postgres@da2:~$ repmgr -h 10.0.30.7 -U repmgr -d repmgr -f repmgr.conf standby clone --dry-run NOTICE:…
I am in process of coming up with a multi-region high availability (active-active) architecture for my product. A simplified version of our stack is that we use Lambda to implement our micro services, which are exposed as APIs using API…
I have installed and configured FreeSwitch. It is up and running perfectly. Now I need to achieve high availability. My freeswitch was deployed in aws ubuntu ec2. As per aws docs for HA, it shows the floating ip concept. I…
I am using Nginx as a failover cluster, where a service is given as an upstream. The service is running in both the nodes simultaneously and the Nginx is set up in third node which redirects to other nodes. When…
I will have an event with 3k users on an app (php base). I launch several instances in the cloud and install LAMP on it.[to make load test and choose on for the event] On Ubuntu 18 I enable mpm_event…
In my architecture on AWS, I have a service running on an EC2 instance which calls Twitter streaming API for data ingestion i.e. ingestion of real-time tweets. I call this service TwitterClient. Twitter API uses a kindof long polling over…
This question sounds very much like: this one, but I believe it is not. Whilst that question is very specific, I believe it doesn't provide enough to cover the doubts I have. I am trying to set up a Redis…
In CAP theorem, Redis is specified as a database which lacks availability (which has partition tolerance and consistency). But there are many places where Redis is considered as a high availability key-value store. What is right? I would be thankful…