I have started getting deadlock exceptions thrown from code that uses Guavas
ConcurrentHashMap
http://code.google.com/p/googleappengine/issues/detail?id=5384
Aside from this problem, loading requests frequently seem to block on
something (resource access?). Normally they complete in 5-8
Hi,
I have this Method(server side) Which I call Asynchronously (RPC) I'm Using
GWT and GAE:
@Override
public List? getClientData(MyPersistance filterClass) {
// TODO Auto-generated method stub
pm = getPersistenceManagerFactory().getPersistenceManager();
Query clientQ =
and pm variable is defined where? one per thread?
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O thanks that was the problem I was using the same pm...
It was declarec as field, I changed the method:
@Override
public List? getClientData(MyPersistance filterClass) {
// TODO Auto-generated method stub
PersistenceManager pm =
getPersistenceManagerFactory().getPersistenceManager();
Query
Hi there,
We already have a persistent class with lots of instances in the datastore.
This class has now an attribute set as gae.parent-pk. We now need to change
the attribute that must be the gae.parent-pk.
Has anyone done this before? Are we to face any issue if we make this
change? We
Pricing should be as follows:
Calculate a price of resources using the demand / availability of
those resources in the cloud:
- if Google has more of resource X than users demand, the price for
that resource would go down and free quota up.
- if users demand more of resource X than Google has,
Amazon does something like this for its excess capacity:
http://aws.amazon.com/ec2/spot-instances/
...but it's just for excess capacity. I wouldn't want this kind of
behavior for my core usage because it would make my bill highly
unpredictable. And it does not incentivize Google to add more
Hi,
I have a Memcache wrapper class with a set of public static methods for
getting and setting application-specific key:value pairs. They use a set of
private static methods defined here:
private static boolean has(String key) {
return
Users who need a highly predictable bill could pre-allocate X
resources for $ (special deal like $9 / month). It tells the
supplier: produce this much at a given future date for the now agreed
price. Supplier profits from planing stability, buyer profits from
price and supply stability.
Incentive
