Upgrading Elasticsearch v2 to v5 (without downtime)
At Chargify, we lean heavily on Elasticsearch for data storage as well as search, but upgrading Elasticsearch major versions requires a full cluster restart. We came »
Live Reindexing with Elasticsearch
In order to upgrade Elasticsearch in-place from v2 to v5, one of the road blocks we faced was that the built-in upgrade feature did not support »
Rails JSON event logging to Elasticsearch with Filebeats
Applications that generate a stream of events need a way to store them centrally for search and analysis. Elasticsearch is a decent choice for aggregating event »
Automating EC2 instances for database backups
😱 A nightmare scenario for any business: needing a backup that isn't there! Procedures for performing and verifying backups have always been necessary, and if this can »
Rails background job queue tips part 3
In this final part, the locking techniques in Chargify's background job system will be explained. Commonly you need a job to run only one at a »