DeferredCache

deferredCache.kt

fun <T : Any> CoroutineScope.deferredCache(block: suspend CoroutineScope.() -> T) : Deferred<T> =
    async(start = CoroutineStart.LAZY) {
        var result: T
        while (true) {
            try {
                result = block()
                break
            } catch (e: Throwable) {
                // failed -- retry
                // todo: log exception somehow?
            }
        }
        result
    }