You can use your own heuristics or use your web server's rate limiting module . The above tips should help you keep afloat in turbulent times.

Unfortunately, the difference is not so great (about 1%) and if you make only one transaction by a small amount your capital will not increase much, but if you make transactions permanently and by a large amount, you can get rich very quickly.

Unfortunately, the difference is not so great (about 1%) and if you make only one transaction by a small amount your capital will not increase much, but if you make transactions permanently and by a large amount, you can get rich very quickly.

Unfortunately, the difference is not so great (about 1%) and if you make only one transaction by a small amount your capital will not increase much, but if you make transactions permanently and by a large amount, you can get rich very quickly.

Unfortunately, the difference is not so great (about 1%) and if you make only one transaction by a small amount your capital will not increase much, but if you make transactions permanently and by a large amount, you can get rich very quickly.

Unfortunately, the difference is not so great (about 1%) and if you make only one transaction by a small amount your capital will not increase much, but if you make transactions permanently and by a large amount, you can get rich very quickly.

Unfortunately, the difference is not so great (about 1%) and if you make only one transaction by a small amount your capital will not increase much, but if you make transactions permanently and by a large amount, you can get rich very quickly.

Unfortunately, the difference is not so great (about 1%) and if you make only one transaction by a small amount your capital will not increase much, but if you make transactions permanently and by a large amount, you can get rich very quickly.

Unfortunately, the difference is not so great (about 1%) and if you make only one transaction by a small amount your capital will not increase much, but if you make transactions permanently and by a large amount, you can get rich very quickly.

Unfortunately, the difference is not so great (about 1%) and if you make only one transaction by a small amount your capital will not increase much, but if you make transactions permanently and by a large amount, you can get rich very quickly.