It would all depend on what's interupting you. Are you getting interupted by hits or by spells? If it's hits, just use a blocking skill, like guardian, bonettis, distortion, etc etc...
If possible, you could become /E and use Glyph of Concentration. If I remember correctly, 5 energy to cast, 1 casting time, 2 seconds recharge, and your next spell cannot be interupted. I've never tried using it myself, but it could help.
I am getting hit by maelstrom I do believe, this is denravi titan farming. I want to use mesmer for arcane echo/soj. Is Glyph of Concentration elite? Because I would like to at least use soj.
Bonetti's wouldnt work against maelstrom... hmm....