Effect of frequent sdcard writes

In my chat app, I am adding the ability to log chats. The logs are saved on the sdcard and one BufferedWriter is kept open for every person/channel chat is done with. I'm wondering what effects this might have have on the s开发者_StackOverflowdcard and its life.

My BufferedWriter's buffer size is to 1024, I'm also wondering if that is too small or too big.

Flash memory cards have an endurance of about a million write cycles per area and probably include wear levelling which basically means trying to write to different areas so specific spots dont wear out.

So after about (sizeOfSDCard/sizeOfYourData)*1,000,000 writes, you will have ruined their card.

Practically, this means you probably aren't going to cause any harm.