For some code you may want to limit its execution time, to prevent infinite loops that can’t be detected within the code. I ran in to this issue with HTMLCleaner on certain HTML, which due to the architecture could not keep track of possible loops with a counter. The code will need to handle thread …
How to timeout a thread in Java / Limiting a threads execution time Read More »
This is because Found attaches multiple IPs to your 0298347602938ahdf.us-east-1.aws.found.io hostname. So if you use a TransportClient with ssl on port 9343 and add the first IP you find with client.addTransportAddress(new InetSocketTransportAddress(host, port)), it’ll eventually stop working because it’s stuck with an old, invalid IP. The solution is to lookup all the IPs on the hostname …
I got burnt by this little architectural nuance in Elasticsearch recently. While batch processing items in a content store, updating their status, then searching for more items, I kept getting stale data and didn’t understand why. It turned out that Elasticsearch is _near_ realtime, with a default 1s refresh interval. So if you index and query within …
Checking logs when you have more than one servers is painful. Use Logback/Logstash-forwarder to send json-formatted logs to a central server running Logstash/ElasticSearch/Kibana, where you can then slice and dice logs to your heart’s content with the power of ElasticSearch and Kibana. Confs and docs available here: https://github.com/vaughnd/centralised-logging
I’ve uploaded a sample project showing you how to integrate Logback with Clojure. There are simpler Clojure logging libraries like Timbre , but using a standardised Java logging has the handy advantage of letting you control logging from non-clojure code as well as redirecting to separate log files and appenders.
