This post describes changes on the Public Test Realm.

This is an experimental attempt to store all room objects data in Apache Cassandra instead of MongoDB. It potentially can reduce the database load and allow us to effectively scale the database without introducing the world sharding feature.

The server driver has been refactored with experimental support of Cassandra and deployed to the PTR. We ask everybody to help us test this change. When the driver is tested well enough and confirmed to be stable, we’ll make a temporary production deployment to benchmark performance and decide whether it’s worth it to proceed with the migration.

findings so far:

Could it be that we currently don't have vision in rooms where we do have an owned structure, but no active creeps? 

• Flag in a room with owned structures WITHOUT creeps do not have any .room property set

 - It took very long (~a minute) between uploading code via grunt to PTR and actually showing the code in the web interface

More important:

 - `> JSON.stringify(Game.rooms)
< {}`

I just respawned in room W48N96, I guess I should have at least the room, where my spawn is located.

No creeps = no vision now

https://screeps.com/ptr/#!/room/E13N15

http://i.imgur.com/PzOaCWm.png

Same for

https://screeps.com/ptr/#!/room/E3N8

It seems terminal transfers aren’t working. I’m receiving OK statuses, but no resources are actually being transferred.

A quick test of terminals seemed to work fine. Could you please provide more details?

I activated my CPU and let my AI go all in. I've modified no code since my last run, and things were to my knowledge stable. So far my code itself seems to be running, but at time of writing this, E59S39 on PTR is froze up entirely, excluding [room]visuals. Creep TTL seems to be decreasing but intents don't seem to be processing? Other rooms are intermittently freezing as well.

Container and rampart decay went into the negative in both rooms (attempting to remove containers didn't work either). Seems to have a loose correlation with the pauses at least. Is it possible the rooms aren't considered "active"? My code runs in stages with rooms, creeps, and structures as separate main-level loops, so I can guarantee something is trying to act on the world. 

Something appears to be wiping out the terminal store entirely. No energy value, nothing. Inspection of a terminal shows the property 'store' is there, but as an empty object. The GUI still shows the resources.

Transfer behavior appears to be a little bugged. Getting invalid target on some previously valid transfer targets such as towers and extensions. Not yet sure why this might be. Mostly occuring in the the frozen room E59S39.

@stuy486 Could you please show an exact snippet of code and the result of it? What is the object with id field undefined?

module.exports.loop = function () {
console.log(JSON.stringify(Game.getObjectById(undefined)));
return;

Output on the console:

{"room":{"name":"E7S64","mode":"world","energyAvailable":0,"energyCapacityAvailable":0,"visual":{"roomName":"E7S64"}},"pos":{"x":23,"y":46,"roomName":"E7S64"},"id":"undefined","ticksToDecay":828,"hits":4700,"hitsMax":5000,"structureType":"road"}

Now that I'm typing this up, I've gone and looked at that room and there's actually two roads at that spot, one with an ID and one without.

So, I suppose it's possible Game.getObjectById() is functioning properly, and the real problem is that there are structures without IDs in various places in my rooms.

Found a bug. Everything in my `Game.structures` is reporting the property structureType as road. Explains all (or most of) the problems I'm having actually.

 2 when empty, 4 when full

https://screeps.com/ptr/#!/room/E83S84