JSONL is the practical version of JSON for workloads made of many independent records. A conventional JSON array is excellent for a bounded document. It becomes awkward when an export grows into millions of items, a log never ends, or an ingestion job must identify and isolate a bad record without loading the whole file. […]
System design fundamentals are the decisions that determine what happens when traffic spikes, a database is behind, a queue is delayed, or a request times out. Tools change quickly, but these problems do not. This guide uses an online ticketing platform as a running example: public event pages receive bursts of traffic, checkout must not […]