Fix db error for memory cache

[EnoRage]

No description provided.

[codecov]

Codecov Report

Merging #146 into master will decrease coverage by 0%.
The diff coverage is 10%.

@@          Coverage Diff          @@
##           master   #146   +/-   ##
=====================================
- Coverage      71%    71%   -1%     
=====================================
  Files          39     39           
  Lines        1548   1555    +7     
=====================================
  Hits         1107   1107           
- Misses        312    319    +7     
  Partials      129    129           

Impacted Files	Coverage Δ
services/cache/memory/base.go	0% <0%> (ø)
services/cache/redis/base.go	61% <0%> (-7%)	⬇️
services/worker/memory.go	74% <0%> (-2%)	⬇️
api/api.go	100% <100%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 56f73d9...9823834. Read the comment docs.