I work in this environment, and execution speed is the "end all be all" for certain programs in the distributed system that makes up the average modern trading environment in most, if not all, firms.
Your analogy to a car is exactly the one that I've used for years: a race car doesn't generally have air bags or electronic stability control; it's stripped down to 4 wheels, an engine, and a steering wheel. I don't really trust "robust recovery" as a idea in this sort of environment anyway because most error conditions are extremely rare and usually involve errors in external systems such as the exchange so the recovery code is impossible to test in a normal sense and is thus very likely to be incorrect. My philosophy (developed after a fairly long career in this field) is: "when in doubt, print a descriptive error message, call abort(), and let the support team sort it out." I am extremely risk averse when it comes to the systems I design, so it's not the case of lack of adult supervision but more an understanding of the limits of what you can do in an extremely complicated environment and that writing lots of error-handling code gives only the illusion of safety.
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I work in this environment, and execution speed is the "end all be all" for certain programs in the distributed system that makes up the average modern trading environment in most, if not all, firms.
Your analogy to a car is exactly the one that I've used for years: a race car doesn't generally have air bags or electronic stability control; it's stripped down to 4 wheels, an engine, and a steering wheel. I don't really trust "robust recovery" as a idea in this sort of environment anyway because most error conditions are extremely rare and usually involve errors in external systems such as the exchange so the recovery code is impossible to test in a normal sense and is thus very likely to be incorrect. My philosophy (developed after a fairly long career in this field) is: "when in doubt, print a descriptive error message, call abort(), and let the support team sort it out." I am extremely risk averse when it comes to the systems I design, so it's not the case of lack of adult supervision but more an understanding of the limits of what you can do in an extremely complicated environment and that writing lots of error-handling code gives only the illusion of safety.