Before you invest in response compression

Most teams know this matters. Fewer have decided who owns it. Before you spend anything on response compression, it is worth confirming a few things are already true.

Speed is a feature people notice only in its absence, and then they leave rather than complain. Most teams find the first pass takes an afternoon and the maintenance takes minutes a month.

Prerequisites

• You can describe the outcome you want in one sentence
• Someone owns it after the work is done
• Text compresses dramatically and costs almost nothing to enable
• You have a way to tell whether it worked

Warning signs

Modern algorithms beat older ones by a useful margin. Small and consistent beats large and occasional here. It is the sort of thing that looks like polish right up until it costs you an enquiry.

Already-compressed formats gain nothing from it. It is worth being explicit about, because assumptions differ quietly. Doing this properly once is usually cheaper than doing it approximately three times.

What this looks like day to day

Real-world numbers from actual visitors matter more than a score produced on a fast laptop. Three things worth confirming about response compression before you move on:

• Someone can say what the current setup is without going to look
• Modern algorithms beat older ones by a useful margin — and you know whether that is true here
• There is a way to tell whether the last change to this helped

Pick the one that would hurt most if it failed, and start there.